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      id="x_5aff6f3b-d494-4a61-b9f8-690a8853d449"
      unitRef="USD">20</oef:MaximumAccountFee>
    <oef:MaximumAccountFee
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="INF"
      id="eb2a0098-3c42-4af6-acc1-84662c86ee1f"
      unitRef="USD">0</oef:MaximumAccountFee>
    <oef:MaximumAccountFee
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="INF"
      id="x_18c59519-e55a-45a8-9e95-6fc3f0c33017"
      unitRef="USD">0</oef:MaximumAccountFee>
    <oef:MaximumAccountFee
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="INF"
      id="x_088e396c-7713-45d0-a3de-306217d7ad60"
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    <oef:MaximumAccountFee
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="INF"
      id="x_9eebc187-fa03-4cf1-be4e-5873b5894247"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="cf4248c0-2191-43b1-a1e7-346752ac0788">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Annual fund operating expenses (%) &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;"&gt;(expenses that you pay each year as a percentage of &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;"&gt;the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_13c00370-d494-47fa-92ae-160abd30a177"
      unitRef="pure">0.0031</oef:ManagementFeesOverAssets>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_5265b035-111b-41f5-8099-54177816f79a"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
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      id="x_2d04de3c-9ce8-4656-b078-f92c0d5ce64b"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="x_3e730c95-fee2-4f0b-8135-53ae6f98a4a9"
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    <oef:ManagementFeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="x_1718a8af-4986-4bf1-9147-0d192a9aa94f"
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    <oef:ManagementFeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="e53f8428-8a08-498b-b914-959d51206fec"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="dedbf60b-19e3-4d82-ad8d-2f0e9a4d7485"
      unitRef="pure">0.0030</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_5a46d39a-1a61-41de-965a-1bea10290b34"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
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      id="a29af7fb-46ec-44c9-bc8a-7e7b1e160c70"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="x_911366d1-8139-42f2-a13a-5daa59b399f8"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="d1ac1086-2a88-4fa1-b4f5-499532f39395"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="x_528f0e66-6aee-483f-ad2d-85e2f274f6cc"
      unitRef="pure">0.0000</oef:DistributionAndService12b1FeesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="bfd872ea-771d-4af1-869e-ace4f45b5ed8"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_1ac3c8fd-5919-49a5-9e7a-1b8ee55d5a4c"
      unitRef="pure">0.0000</oef:Component1OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="x_4a3ae9cd-5a69-45e0-b6f6-2d0cf2fc579e"
      unitRef="pure">0.0000</oef:Component1OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="e1baad15-5b0e-44a0-a3a5-1774c4eab960"
      unitRef="pure">0.0025</oef:Component1OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="ac20d4a6-14f7-4d16-b2fd-cae95f3b400d"
      unitRef="pure">0.0010</oef:Component1OtherExpensesOverAssets>
    <oef:Component1OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="x_54352580-99da-49bb-a3b9-9d1a70f38dfe"
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    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_794b0bb6-1fa3-49af-8d38-2d4c0f2a2f8c"
      unitRef="pure">0.0015</oef:Component2OtherExpensesOverAssets>
    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_339a9a2d-776e-4f22-b36b-614ec554dc02"
      unitRef="pure">0.0015</oef:Component2OtherExpensesOverAssets>
    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="x_6c137242-7389-4be6-a748-9164545d7119"
      unitRef="pure">0.0015</oef:Component2OtherExpensesOverAssets>
    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="x_11e249f0-8794-485c-8abe-fd11d25d5c55"
      unitRef="pure">0.0005</oef:Component2OtherExpensesOverAssets>
    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="x_22943f81-8c29-436b-a475-a9bb9bbc3f90"
      unitRef="pure">0.0005</oef:Component2OtherExpensesOverAssets>
    <oef:Component2OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="x_220c1257-903f-4bc3-9ffc-533a212a6c7f"
      unitRef="pure">0.0005</oef:Component2OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_3729f70b-d656-442b-b479-a1bbd6dacb1a"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="bd7bf392-cd32-438d-a658-47dde7984096"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="da4482d5-86a1-4b98-a3a9-e4df7387097a"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="x_742184cb-d5a1-4367-aa51-9290945126e3"
      unitRef="pure">0.0030</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="x_3fd1ce0b-8af5-4d7d-81b1-664fe2e35ec5"
      unitRef="pure">0.0015</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="x_56d61144-6727-4389-b57e-b74fcedcc914"
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    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_2206e283-8fa0-4329-a4fc-3892c30db4d0"
      unitRef="pure">0.0076</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_44302d83-76d4-4e81-87ee-21c85b5ff50d"
      unitRef="pure">0.0146</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="x_8844c491-6f6c-4b57-a876-d3b719360076"
      unitRef="pure">0.0046</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="x_1c799552-9fc6-41eb-b202-441e9b47e8bd"
      unitRef="pure">0.0086</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="x_9164a1ff-8df8-4556-a34e-19101f6bdb38"
      unitRef="pure">0.0071</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="a722b734-6000-4878-b20a-03f5794a5830"
      unitRef="pure">0.0036</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_858f353b-5438-48d2-8365-1331ed7189f6"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="x_8e0fbbd4-ae78-4f45-a859-543791c5fb03"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="x_69d3f2ec-15f3-436e-b2ea-274bd3b5747c"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="dbf34af9-31ee-4706-a657-4511e60d9a47"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="b34cf6aa-e239-4aa7-8400-eba5c75cc1df"
      unitRef="pure">-0.0011</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="d6aa9271-5084-4e97-a20c-85f5df5b69db"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_1eaff806-5669-4d77-bc8f-00dc302c66d0"
      unitRef="pure">0.0075</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="4"
      id="e62ae19b-cd60-4217-8144-0df088993ca2"
      unitRef="pure">0.0145</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="4"
      id="bd82604c-5e2e-4e1f-a0a2-fecaaf6a25e9"
      unitRef="pure">0.0045</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="4"
      id="e3f31c1a-f8ef-4c7d-a48d-2790fbc7533a"
      unitRef="pure">0.0085</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="4"
      id="d66fed68-2dbf-4885-b013-f46ebdcdf8ce"
      unitRef="pure">0.0060</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="4"
      id="x_4ff29e21-e0b1-4de0-a9fa-33a3ec2d7e61"
      unitRef="pure">0.0035</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_0522ad8b-2256-4266-8736-6c000ea729f2">&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;September 30, 2027&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;September 30, 2027&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_2186cfea-56d1-460c-96aa-35b703bb38fd">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Expense example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="eae9d75e-4b25-4481-a39a-d4a38a82d829">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment for the time periods indicated and then, except as shown below, assuming you sell all of your shares at the end of those periods. The example assumes a 5% average annual return and that fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleByYearCaption
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="c36db93e-4324-49ca-885b-2e5c798d91d0">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;"&gt;Shares Sold&lt;/span&gt;</oef:ExpenseExampleByYearCaption>
    <oef:ExpenseExampleNoRedemptionByYearCaption
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_1be17bf4-1255-42b5-a5eb-60aa8b42feed">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;"&gt;Shares&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;"&gt;Not Sold&lt;/span&gt;</oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="INF"
      id="ed06744b-b46b-4ebb-aabf-3e9808062b44"
      unitRef="USD">474</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="INF"
      id="x_350a760f-a9a6-4b35-834a-9d68893ebdc8"
      unitRef="USD">248</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="INF"
      id="b96b8701-b1fd-4245-ac7f-9738d03da6a5"
      unitRef="USD">46</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="INF"
      id="x_67016b39-d26b-40b1-b915-04637067840c"
      unitRef="USD">87</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="INF"
      id="x_22e23697-c172-4254-a743-1918b1a1f7e2"
      unitRef="USD">61</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="INF"
      id="x_296fe71b-0a54-4632-a143-0cc9c090d610"
      unitRef="USD">36</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="INF"
      id="x_31c0e051-7987-453b-961a-9f56d2d45a96"
      unitRef="USD">148</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="INF"
      id="x_09de7eff-35da-4ff9-9227-977c98101578"
      unitRef="USD">632</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="INF"
      id="x_727a05bd-97b2-46de-a3e1-adb4a21788c2"
      unitRef="USD">461</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="INF"
      id="f6708493-1569-4780-b1d3-50ddc39b6cfd"
      unitRef="USD">147</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="INF"
      id="x_6fcdbb3e-8cba-4aef-b501-a781762f4a1d"
      unitRef="USD">273</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
      decimals="INF"
      id="a60a78d0-d998-415e-b596-86a8ef9db4c9"
      unitRef="USD">216</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="INF"
      id="x_28ea0051-7f47-4060-b5a1-e479a744c36d"
      unitRef="USD">115</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
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      decimals="INF"
      id="x_253cb06a-9f3c-4aa3-a877-1bb2170fff16"
      unitRef="USD">257</oef:ExpenseExampleYear05>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="INF"
      id="x_0667052b-3a6a-4058-a57c-6c671953e2a2"
      unitRef="USD">476</oef:ExpenseExampleYear05>
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      decimals="INF"
      id="x_7be2ef2f-5ad2-4b0c-b348-a742213ddef3"
      unitRef="USD">384</oef:ExpenseExampleYear05>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
      decimals="INF"
      id="x_7bb0956f-72bb-4e93-bb46-ef33bb211dba"
      unitRef="USD">201</oef:ExpenseExampleYear05>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="INF"
      id="x_6c135a7d-8ea9-49c7-9bd8-f906592efb99"
      unitRef="USD">796</oef:ExpenseExampleNoRedemptionYear05>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="INF"
      id="x_0e15455d-80a2-48ad-9f8c-eb0da8711034"
      unitRef="USD">1304</oef:ExpenseExampleYear10>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001856"
      decimals="INF"
      id="x_2b75617f-2fe5-416b-afe8-44f281060db5"
      unitRef="USD">1555</oef:ExpenseExampleYear10>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001857"
      decimals="INF"
      id="x_320f2ced-fcd6-4303-9228-9b59b7f24428"
      unitRef="USD">578</oef:ExpenseExampleYear10>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000113488"
      decimals="INF"
      id="x_46727bbf-23f6-45e7-960a-8cbcd1f22285"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000153978"
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      id="x_157b789b-e42c-4dd0-8888-5b19f0220e9d"
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000106442"
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      id="x_7cb68d99-f68f-49fd-bf88-d489fa347414">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
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      id="x_22dbc621-e745-4099-9d79-f1c6a5d0e018">&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund&#x2019;s performance. During its most recent fiscal year, the fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;102&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
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      id="d105b0a1-0c79-490f-bcc5-e31813cdf669">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
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      id="x_64a38c02-e2f9-4990-805d-fa3a28b884cb">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of bonds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; These may include, but are not limited to, corporate bonds and debentures, mortgage-backed and asset-backed securities, and &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;U.S. government and agency securities. Most of these securities are investment-grade, although the fund may invest up to 25% of its net assets in below-investment-grade debt securities (junk bonds) rated as low as CC by S&amp;amp;P Global Ratings (S&amp;amp;P) and Fitch Ratings, Inc. (Fitch Ratings) and Ca by Moody&#x2019;s Investors Service, Inc. (Moody&#x2019;s), or comparable rating by any nationally recognized statistical rating organization (NRSRO), or their unrated equivalents. The fund contemplates that at least 75% of its net assets will be in investment-grade debt securities and cash and cash equivalents. The fund&#x2019;s investment policies are based on credit ratings at the time of purchase. There is no limit on average maturity. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager focuses on sector allocation, industry allocation, and security selection in making investment decisions. When making sector and industry allocations, the manager uses top-down analysis to try to anticipate shifts in the business cycle. The manager uses bottom-up research to find individual securities that appear comparatively undervalued.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; The fund may invest in securities of foreign governments and corporations. The fund will not invest &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;more than 10% of its total assets in securities denominated in foreign currencies. Under normal market conditions, the fund does not anticipate investing more than 25% of its total assets in U.S. dollar-denominated foreign securities (excluding U.S. dollar denominated Canadian securities). &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager considers environmental, social, and/or governance (ESG) factors, alongside other relevant factors, as part of its investment process. ESG factors may include, but are not limited to, matters regarding board diversity, climate change policies, and supply chain and human rights policies. The ESG characteristics utilized in the fund&#x2019;s investment process may change over time and one or more characteristics may not be relevant with respect to all issuers that are eligible fund investments. Because ESG factors are considered alongside other relevant factors, the manager may determine that an investment is appropriate notwithstanding its relative ESG characteristics. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The fund intends to keep its interest-rate exposure generally in line with its peers. The fund may engage in derivative transactions. Derivatives may be used to reduce risk, obtain efficient market exposure, and/or enhance investment returns, and may include futures contracts on securities and indexes; options on futures contracts, securities, and indexes; interest-rate, foreign currency, and credit default swaps; and foreign currency forward contracts. The fund&#x2019;s investments in U.S. government and agency securities may or may not be supported by the full faith and credit of the United States. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal circumstances, the fund may not invest more than 10% of its net assets in cash or cash equivalents. The fund may trade securities actively.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="bf0d6d5f-2fd2-41eb-94e8-7a9606689b5d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of bonds.&lt;/span&gt;</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="e1c5787c-89e1-4b13-88de-331fde79fbb5">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager focuses on sector allocation, industry allocation, and security selection in making investment decisions. When making sector and industry allocations, the manager uses top-down analysis to try to anticipate shifts in the business cycle. The manager uses bottom-up research to find individual securities that appear comparatively undervalued.&lt;/span&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_RiskNotInsuredDepositoryInstitutionMember"
      id="x_47ef4816-ebbb-4fb1-87a7-0c4082fcaedb">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_RiskLoseMoneyMember"
      id="f204207f-0313-4f83-bb98-6c155ce2f156">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_CashAndCashEquivalentsRiskMember"
      id="x_85e56585-220b-4b06-ab2b-1247dad6f7df">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Cash and cash equivalents risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under certain market conditions, such as during a rising stock market, rising interest rate or rising credit spread markets, the use of cash and/or cash equivalents, including money market instruments, could have a negative effect on the fund&#x2019;s ability to achieve its investment objective and may negatively impact the fund&#x2019;s performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_ChangingDistributionLevelsRiskMember"
      id="x_031d0521-b90d-4976-950b-b0f1cc12673f">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Changing distribution levels risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_CreditAndCounterpartyRiskMember"
      id="x_8499b0df-0e33-484b-9c01-6dc978e1f68f">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Credit and counterparty risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of fund securities may not make timely payments or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. A downgrade or default affecting any of the fund&#x2019;s securities could affect the fund&#x2019;s performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_EconomicAndMarketEventsRiskMember"
      id="c1b456c2-fbbe-4628-bd21-3e77f0fa1fb5">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Economic and market events risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility, which could negatively impact performance. Reduced liquidity in credit and fixed-income markets could adversely affect issuers worldwide. Banks and financial services companies could suffer losses if interest rates rise or economic conditions deteriorate.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_ESGIntegrationRiskMember"
      id="dd5c691c-acf5-463d-aa0a-d0abd05368ed">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;ESG integration risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The manager considers ESG factors that it deems relevant or additive, along with other material factors and analysis, when managing the fund. ESG factors may include, but are not limited to, matters regarding board diversity, climate change policies, and supply chain and human rights policies. The manager may consider these ESG factors on all or a meaningful portion of the fund&#x2019;s investments. Integration of ESG factors into the fund&#x2019;s investment process does not preclude the fund from including companies with low ESG characteristics or excluding companies with high ESG characteristics in the fund's investments. Incorporating ESG criteria and making investment decisions based on certain ESG characteristics, as determined by the manager, carries the risk that the fund may perform differently, including underperforming, funds that do not utilize ESG criteria, or funds that utilize different ESG criteria.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_FixedIncomeSecuritiesRiskMember"
      id="x_72fe32dc-6b03-482a-831f-f2a90686ad41">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Fixed-income securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;A rise in interest rates typically causes bond prices to fall. The longer the average maturity or duration of the bonds held by a fund, the more sensitive it will likely be to interest-rate fluctuations. An issuer may not make all interest payments or repay all or any of the principal borrowed. Changes in a security&#x2019;s credit quality may adversely affect fund performance.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_ForeignSecuritiesRiskMember"
      id="x_0804396a-a81e-4df4-9fcd-7558cb787eae">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Foreign securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Less information may be publicly available regarding foreign issuers, including foreign government issuers. Foreign securities may be subject to foreign taxes and may be more volatile than U.S. securities. Currency fluctuations and political and economic developments may adversely impact the value of foreign securities.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_HedgingDerivativesAndOtherStrategicTransactionsRiskMember"
      id="x_007f41be-d7bd-4178-8b8d-23b89c3a775c">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Hedging, derivatives, and other strategic transactions risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Hedging, derivatives, and other strategic transactions may increase a fund&#x2019;s volatility and could produce disproportionate losses, potentially more than the fund&#x2019;s principal investment. Risks of these transactions are different from and possibly greater than risks of investing directly in securities and other traditional instruments. Under certain market conditions, derivatives could become harder to value or sell and may become subject to liquidity risk (i.e., the inability to enter into closing transactions). Derivatives and other strategic transactions that the fund intends to utilize include: credit default swaps, foreign currency forward contracts, foreign currency swaps, futures contracts, interest-rate swaps, options on futures, and options. Foreign currency forward contracts, futures contracts, options, and swaps generally are subject to counterparty risk. In addition, swaps may be subject to interest-rate and settlement risk, and the risk of default of the underlying reference obligation. Derivatives associated with foreign currency transactions are subject to currency risk.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_HighPortfolioTurnoverRiskMember"
      id="da071357-eb3a-486a-ae8e-4fc7abad489e">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;High portfolio turnover risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Trading securities actively and frequently can increase transaction costs (thus lowering performance) and taxable distributions.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_LargeShareholderRiskMember"
      id="x_2e671dce-b01b-4d22-ba05-063fe108987d">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Large shareholder risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;A significant portion of a fund&#x2019;s shares may be owned by one or more large shareholders, including investment vehicles and institutional investors. Transactions by these large shareholders may be disruptive to the management of the fund. For example, the fund may experience large redemptions and could be required to sell securities at a time when it may not otherwise desire to do so. Such transactions may increase the fund&#x2019;s brokerage and/or other transaction costs, which could adversely impact fund performance. In addition, sizeable redemptions could cause the fund&#x2019;s total expenses to increase. Large redemptions could also require the fund to make taxable distributions to shareholders, which may be borne disproportionately by non-redeeming shareholders.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_LiquidityRiskMember"
      id="x_8e014d02-8ac2-4748-9121-4b3c29a67314">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Liquidity risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The extent (if at all) to which a security may be sold or a derivative position closed without negatively impacting its market value may be impaired by reduced market activity or participation, legal restrictions, or other economic and market impediments. Liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Widespread selling of fixed-income securities to satisfy redemptions during periods of reduced demand may adversely impact the price or salability of such securities. Periods of heavy redemption could cause the fund to sell assets at a loss or depressed value, which could negatively affect performance. Redemption risk is heightened during periods of declining or illiquid markets.&lt;/span&gt;</oef:RiskTextBlock>
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      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_LowerRatedAndHighYieldFixedIncomeSecuritiesRiskMember"
      id="x_2338421e-b1a6-4365-b7eb-4d168a78556d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Lower-rated and high-yield fixed-income securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Lower-rated and high-yield fixed-income securities (junk bonds) are subject to greater credit quality risk, risk of default, and price volatility than higher-rated fixed-income securities, may be considered speculative, and can be difficult to resell.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_MortgageBackedAndAssetBackedSecuritiesRiskMember"
      id="x_32505bc7-a11f-417e-853e-cfa50bd7102d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Mortgage-backed and asset-backed securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Mortgage-backed and asset-backed securities are subject to different combinations of prepayment, extension, interest-rate, and other market risks. Factors that impact the value of these securities include interest rate changes, the reliability of available information, credit quality or enhancement, and market perception.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_OperationalAndCybersecurityRiskMember"
      id="x_897c4380-7ebf-4d2e-85db-f89ba648e247">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Operational and cybersecurity risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Cybersecurity breaches may allow an unauthorized party to gain access to fund assets, customer data, or proprietary information, or cause a fund or its service providers to suffer data corruption or lose operational functionality. Similar incidents affecting &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;issuers of a fund&#x2019;s securities may negatively impact performance. Operational risk may arise from human error, error by third parties, communication errors, or technology failures, among other causes.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_SectorRiskMember"
      id="x_2d7a1d75-9eb9-4355-a39f-38b55e2ece40">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Sector risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;When a fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the fund were invested more evenly across sectors.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_USGovernmentAgencyObligationsRiskMember"
      id="x_53dd342f-d135-409e-9246-de67bee1a356">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;U.S. government agency obligations risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The fund invests in obligations issued by agencies and instrumentalities of the U.S. government. U.S. government-sponsored entities such as Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) and the Federal Home Loan Banks, although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt securities that they issue are neither guaranteed nor issued by the U.S. government. Such debt securities are subject to the risk of default on the payment of interest and/or principal, similar to the debt securities of private issuers. The maximum potential liability of the issuers of some U.S. government obligations may greatly exceed their current resources, including any legal right to support from the U.S. government. Although the U.S. government has provided financial support to Fannie Mae and Freddie Mac in the past, there can be no assurance that it will support these or other government-sponsored entities in the future.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="e26cb0dc-5430-4e3f-a993-1c081158f5f4">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Past performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="d77ba11c-b00b-4735-a00f-577c329e096b">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The following information illustrates the variability of the fund&#x2019;s returns and provides some indication of the risks of investing in the fund by showing changes in the fund&#x2019;s performance from year to year and by showing how the fund&#x2019;s average annual returns compared with a broad-based securities market index. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Past performance (before and after taxes) does not indicate future results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; All figures assume dividend reinvestment. Performance information is updated daily, monthly, and quarterly and may be obtained at our website,&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; jhinvestments.com&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, or by calling &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;800-225-5291, Monday to &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Thursday, 8:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;&#x2014;7:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, and Friday, 8:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;&#x2014;6:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, Eastern time&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Please note that after-tax returns (shown for Class A shares only)&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; reflect the highest individual federal marginal income-tax rate in effect as of the date &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;provided and do not reflect any state or local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;IRA, 401(k), or other tax-advantaged investment plan.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; After-tax returns for other share classes would vary.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_5ff0dcde-be3f-44a0-aeb2-b89a57b79548">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The following information illustrates the variability of the fund&#x2019;s returns and provides some indication of the risks of investing in the fund by showing changes in the fund&#x2019;s performance from year to year and by showing how the fund&#x2019;s average annual returns compared with a broad-based securities market index. &lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_98e40188-e046-423e-97ed-7eb314bd3d3d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Past performance (before and after taxes) does not indicate future results.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_7ac696bb-36d9-469f-a965-a0b8750414ce">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; jhinvestments.com&lt;/span&gt;</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_410f6742-6633-4ebd-bff3-02151f1c2f86">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;800-225-5291, Monday to &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Thursday, 8:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;&#x2014;7:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, and Friday, 8:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;&#x2014;6:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt; p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, Eastern time&lt;/span&gt;</oef:PerformanceAvailabilityPhone>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_2b23ca88-d38f-40c6-8e89-6cec4f2890c4">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Please note that after-tax returns (shown for Class A shares only)&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; reflect the highest individual federal marginal income-tax rate in effect as of the date &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;provided and do not reflect any state or local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_17ca900b-af22-4caa-b55c-232bfda82c33">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Please note that after-tax returns (shown for Class A shares only)&lt;/span&gt;</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_679b3a22-0466-4d0b-94b4-f82f4a480217">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;IRA, 401(k), or other tax-advantaged investment plan.&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_5b82c316-cc12-4419-817c-3bb44260ee1a">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Calendar year total returns (%)&#x2014;Class A &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;(&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;sales charges are not reflected in the bar chart and returns would have been lower if they were&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;)&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartDoesNotReflectSalesLoads
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_6959f1c8-69b0-4907-bcd4-3fa3448e544e">&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;sales charges are not reflected in the bar chart and returns would have been lower if they were&lt;/span&gt;</oef:BarChartDoesNotReflectSalesLoads>
    <oef:BarChartClosingTextBlock
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="x_0f9cc0e6-62c4-46c0-b91e-987090c172c4">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Year-to-date total return through:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q2 2026&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;0.74%&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Best quarter:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q4 2023&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;7.09%&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Worst quarter:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q2 2022&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;-6.94%&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:YearToDateReturnLabel
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="x_85a6c83b-f549-4b8b-a9c7-184b281ff3ca">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Year-to-date total return through:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="x_0237ecee-5fa9-4a28-805a-a7df983ca006">2026-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_9cc2ff0b-e073-4b7a-b735-9fbea4a896d0"
      unitRef="pure">0.0074</oef:BarChartYearToDateReturn>
    <oef:HighestQuarterlyReturnLabel
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="x_8af34e38-7ecc-41e4-8a1d-d02df3c307fa">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Best quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="e2b60aa0-74cb-4867-ac48-6e95a9ef18d5">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="x_6356bc96-9325-4b2b-a2bb-769358c9bef6"
      unitRef="pure">0.0709</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="x_06848f72-e844-42fc-bc64-63178bc909cb">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Worst quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      id="dcb3aa5b-34b5-4694-8e16-f6a964c89874">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646_C000001854"
      decimals="4"
      id="cf9aaead-d096-40da-9110-ba9dfa38a73d"
      unitRef="pure">-0.0694</oef:BarChartLowestQuarterlyReturn>
    <oef:PerformanceTableHeading
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_S000000646"
      id="a190e720-0097-4254-b924-9024f9bd7bc4">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Average annual total returns (%)&#x2014;as of 12/31/2025&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_01Jan2025_31Dec2025"
      decimals="4"
      id="cea10dc2-8d01-4922-a0bb-75569d2c77be"
      unitRef="pure">0.0309</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_01Jan2021_31Dec2025"
      decimals="4"
      id="x_0d8078df-60e7-44e4-b2e2-42ead6c66915"
      unitRef="pure">-0.0107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_01Jan2016_31Dec2025"
      decimals="4"
      id="b689c84c-0b35-4104-b4f8-744066d3ad24"
      unitRef="pure">0.0208</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsMember_01Jan2025_31Dec2025"
      decimals="4"
      id="x_2f17490d-6ca8-4273-9773-ceb97b38198d"
      unitRef="pure">0.0131</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsMember_01Jan2021_31Dec2025"
      decimals="4"
      id="x_089817dd-cbac-4215-90b5-12edbedd350d"
      unitRef="pure">-0.0258</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsMember_01Jan2016_31Dec2025"
      decimals="4"
      id="ef718626-e14c-4328-9b67-62457fd7f019"
      unitRef="pure">0.0055</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsAndSalesMember_01Jan2025_31Dec2025"
      decimals="4"
      id="x_7da4a2b3-8be0-4b59-b8a5-67a58d678dcc"
      unitRef="pure">0.0206</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsAndSalesMember_01Jan2021_31Dec2025"
      decimals="4"
      id="x_3c56805b-c7aa-4611-a753-8d1d5063f00d"
      unitRef="pure">-0.0139</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001854_AfterTaxesOnDistributionsAndSalesMember_01Jan2016_31Dec2025"
      decimals="4"
      id="x_44da337d-e7b5-4849-9ea9-c34860583a36"
      unitRef="pure">0.0094</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001856_01Jan2025_31Dec2025"
      decimals="4"
      id="x_44569c2f-968d-4073-b510-d031d0cec6da"
      unitRef="pure">0.0560</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001856_01Jan2021_31Dec2025"
      decimals="4"
      id="x_43745683-3721-4a94-ade2-b17ba89ef927"
      unitRef="pure">-0.0096</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001856_01Jan2016_31Dec2025"
      decimals="4"
      id="x_1f96d827-5f2e-4682-97d7-9ef38cccd0c6"
      unitRef="pure">0.0178</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001857_01Jan2025_31Dec2025"
      decimals="4"
      id="fe6bea0e-d987-42f9-a7dc-629c3dda8dfc"
      unitRef="pure">0.0767</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001857_01Jan2021_31Dec2025"
      decimals="4"
      id="x_097dd549-ff2c-4e07-8cc5-e4c146cdcb54"
      unitRef="pure">0.0004</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000001857_01Jan2016_31Dec2025"
      decimals="4"
      id="x_24ba3360-9d15-42aa-8825-25fe616e0b58"
      unitRef="pure">0.0279</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000113488_01Jan2025_31Dec2025"
      decimals="4"
      id="x_308a432b-1f8b-4305-8e00-32e0789ceb60"
      unitRef="pure">0.0725</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000113488_01Jan2021_31Dec2025"
      decimals="4"
      id="d1e0412f-5949-4e24-9d59-8b87a3b685f4"
      unitRef="pure">-0.0035</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000113488_01Jan2016_31Dec2025"
      decimals="4"
      id="x_185d9d4f-9714-485e-9dbc-5ce9d9d848c4"
      unitRef="pure">0.0240</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000153978_01Jan2025_31Dec2025"
      decimals="4"
      id="d4a5761a-8fef-4e0f-8a07-0a9fa2a33dce"
      unitRef="pure">0.0759</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000153978_01Jan2021_31Dec2025"
      decimals="4"
      id="aaabba36-04c1-4867-a24e-682bf20a7f49"
      unitRef="pure">-0.0008</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000153978_01Jan2016_31Dec2025"
      decimals="4"
      id="x_6f9c4b67-1618-4623-ad2a-d23f15c00e88"
      unitRef="pure">0.0266</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000106442_01Jan2025_31Dec2025"
      decimals="4"
      id="x_310f8e4b-5121-4f02-a825-a0932cbf4d0a"
      unitRef="pure">0.0777</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000106442_01Jan2021_31Dec2025"
      decimals="4"
      id="x_73ee8d3b-cdfc-424c-a3fd-5e3264d1c897"
      unitRef="pure">0.0015</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_C000106442_01Jan2016_31Dec2025"
      decimals="4"
      id="x_5d7eabc3-09fb-4fc0-bb8b-7a9218775f0c"
      unitRef="pure">0.0292</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_BloombergUSAggregateBondIndexMember_01Jan2025_31Dec2025"
      decimals="4"
      id="x_73d8cfa0-496f-4b24-b98f-165cc5b4c957"
      unitRef="pure">0.0730</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_BloombergUSAggregateBondIndexMember_01Jan2021_31Dec2025"
      decimals="4"
      id="x_5585edf3-6653-4628-8ea8-6289b4f8349a"
      unitRef="pure">-0.0036</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassesACIR2R4andR6Member_BloombergUSAggregateBondIndexMember_01Jan2016_31Dec2025"
      decimals="4"
      id="dfd7f5b0-715c-4197-812b-aaa19f58e5a8"
      unitRef="pure">0.0201</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="ef1c2416-69d7-4764-b473-ff9cd01946fe">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:24pt;"&gt;John Hancock Bond Fund&lt;/span&gt;</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="b0bcefe6-a8dd-4b45-9da7-d426fd0977a7">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Investment objective&lt;/span&gt;</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="df011dfd-1408-4d23-81d1-20d1976be0a6">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;To seek a high level of current income consistent with prudent investment risk.&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="fb636b22-ea55-4405-9f29-d326f51f93a6">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Fees and expenses&lt;/span&gt;</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="d72d8bf7-e284-40fe-8876-296cc5b8549b">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the fund. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_5f86a148-cd6f-4bfa-8d08-866c895c473a">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Shareholder fees (%) &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;"&gt;(fees paid directly from your investment)&lt;/span&gt;</oef:ShareholderFeesCaption>
    <oef:MaximumCumulativeSalesChargeOverOther
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="d8ddc7f2-abf9-4c3a-8e03-7090e67593f4"
      unitRef="pure">0</oef:MaximumCumulativeSalesChargeOverOther>
    <oef:MaximumDeferredSalesChargeOverOther
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_8363dd4a-f635-4d3e-89d7-000ac266c0fc"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOther>
    <oef:OperatingExpensesCaption
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_7f832719-5200-4865-8107-ef0a0a29b000">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Annual fund operating expenses (%) &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;"&gt;(expenses that you pay each year as a percentage of the value of your investment)&lt;/span&gt;</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="d0dd80e4-b710-45bd-8c63-4f5013f1f17b"
      unitRef="pure">0.0031</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_92715b00-139e-4bfc-8903-e9d3646592e6"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_92d9078e-e1f0-42c6-b69f-d39e259d46fb"
      unitRef="pure">0.0035</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="e1b289ec-1ece-4e4d-a247-435e5685ace2"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_77efb262-7a12-449e-bfcf-70a9dd4c50aa"
      unitRef="pure">0.0034</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_969b3fa5-d96c-435d-95e8-0962f6d0d390">&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;September 30, 2027&lt;/span&gt;</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="d8259cae-6720-4ef6-88fd-64e59685d77e">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Expense example&lt;/span&gt;</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_3e923547-ada3-4a7e-8ef2-a45537c2dee7">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment for the time periods indicated and then assuming you sell all of your shares at the end of those periods. The example assumes a 5% average annual return and that fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:&lt;/span&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="INF"
      id="x_0fb676cb-962e-48c7-9ce2-39e23fd39ae4"
      unitRef="USD">35</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="INF"
      id="d82a6ce0-2c0d-4934-a5b3-e102b76d27df"
      unitRef="USD">112</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="INF"
      id="a3ca6430-2a5b-41e8-85ab-2bd0671e90e3"
      unitRef="USD">196</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="INF"
      id="x_0179a8fa-9fa7-4f35-8cec-e07f099a8cf8"
      unitRef="USD">442</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_5c2fa26f-1e8b-4557-a39f-864ce4b63b46">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Portfolio turnover&lt;/span&gt;</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_2bc801ec-bb09-4e90-817b-ce25af72a460">&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund&#x2019;s performance. During its most recent fiscal year, the fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;102&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      decimals="4"
      id="ea4b18ed-076a-4ce6-a40d-947a4585562d"
      unitRef="pure">1.02</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_41fd847d-1ead-4297-ac45-8537266d8d64">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Principal investment strategies&lt;/span&gt;</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="d25556e2-887b-4578-a887-32d14426df9a">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of bonds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; These may include, but are not limited to, corporate bonds and debentures, mortgage-backed and asset-backed securities, and &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;U.S. government and agency securities. Most of these securities are investment-grade, although the fund may invest up to 25% of its net assets in below-investment-grade debt securities (junk bonds) rated as low as CC by S&amp;amp;P Global Ratings (S&amp;amp;P) and Fitch Ratings, Inc. (Fitch Ratings) and Ca by &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Moody&#x2019;s Investors Service, Inc. (Moody&#x2019;s), or comparable rating by any nationally recognized statistical rating organization (NRSRO), or their unrated equivalents. The fund contemplates that at least 75% of its net assets will be in investment-grade debt securities and cash and cash equivalents. The fund&#x2019;s investment policies are based on credit ratings at the time of purchase. There is no limit on average maturity. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager focuses on sector allocation, industry allocation, and security selection in making investment decisions. When making sector and industry allocations, the manager uses top-down analysis to try to anticipate shifts in the business cycle. The manager uses bottom-up research to find individual securities that appear comparatively undervalued.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; The fund may invest in securities of foreign governments and corporations. The fund will not invest &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;more than 10% of its total assets in securities denominated in foreign currencies. Under normal market conditions, the fund does not anticipate investing more than 25% of its total assets in U.S. dollar-denominated foreign securities (excluding U.S. dollar denominated Canadian securities). &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager considers environmental, social, and/or governance (ESG) factors, alongside other relevant factors, as part of its investment process. ESG factors may include, but are not limited to, matters regarding board diversity, climate change policies, and supply chain and human rights policies. The ESG characteristics utilized in the fund&#x2019;s investment process may change over time and one or more characteristics may not be relevant with respect to all issuers that are eligible fund investments. Because ESG factors are considered alongside other relevant factors, the manager may determine that an investment is appropriate notwithstanding its relative ESG characteristics. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The fund intends to keep its interest-rate exposure generally in line with its peers. The fund may engage in derivative transactions. Derivatives may be used to reduce risk, obtain efficient market exposure, and/or enhance investment returns, and may include futures contracts on securities and indexes; options on futures contracts, securities, and indexes; interest-rate, foreign currency, and credit default swaps; and foreign currency forward contracts. The fund&#x2019;s investments in U.S. government and agency securities may or may not be supported by the full faith and credit of the United States. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal circumstances, the fund may not invest more than 10% of its net assets in cash or cash equivalents. The fund may trade securities actively.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_872e87fa-5eed-4a22-9187-08102b674efc">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of bonds.&lt;/span&gt;</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_90bcb455-9284-4909-9e61-ec01c3224233">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The manager focuses on sector allocation, industry allocation, and security selection in making investment decisions. When making sector and industry allocations, the manager uses top-down analysis to try to anticipate shifts in the business cycle. The manager uses bottom-up research to find individual securities that appear comparatively undervalued.&lt;/span&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_RiskNotInsuredDepositoryInstitutionMember"
      id="f8ffef03-8241-4e44-819f-67a93d2f962f">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_RiskLoseMoneyMember"
      id="d57d9e47-d0cd-47dd-a429-c5067110f886">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_CashAndCashEquivalentsRiskMember"
      id="dae13017-ea80-40a3-bd71-9d8aeacfd26d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Cash and cash equivalents risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Under certain market conditions, such as during a rising stock market, rising interest rate or rising credit spread markets, the use of cash and/or cash equivalents, including money market instruments, could have a negative effect on the fund&#x2019;s ability to achieve its investment objective and may negatively impact the fund&#x2019;s performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_ChangingDistributionLevelsRiskMember"
      id="c8b69561-8422-4491-987c-990522116617">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Changing distribution levels risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_CreditAndCounterpartyRiskMember"
      id="x_09ec753b-0534-404b-8793-6c89a649d3d6">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Credit and counterparty risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of fund securities may not make timely payments or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. A downgrade or default affecting any of the fund&#x2019;s securities could affect the fund&#x2019;s performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_EconomicAndMarketEventsRiskMember"
      id="a399eecf-579c-48c7-a6c5-decbff1cf15d">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Economic and market events risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility, which could negatively impact performance. Reduced liquidity in credit and fixed-income markets could adversely affect issuers worldwide. Banks and financial services companies could suffer losses if interest rates rise or economic conditions deteriorate.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_ESGIntegrationRiskMember"
      id="x_63c4bd8e-e6a6-4189-8cc6-d3f2cdc76387">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;ESG integration risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The manager considers ESG factors that it deems relevant or additive, along with other material factors and analysis, when managing the fund. ESG factors may include, but are not limited to, matters regarding board diversity, climate change policies, and supply chain and human rights policies. The manager may consider these ESG factors on all or a meaningful portion of the fund&#x2019;s investments. Integration of ESG factors into the fund&#x2019;s investment process does not preclude the fund from including companies with low ESG characteristics or excluding companies with high ESG characteristics in the fund's investments. Incorporating ESG criteria and making investment decisions based on certain ESG characteristics, as determined by the manager, carries the risk that the fund may perform differently, including underperforming, funds that do not utilize ESG criteria, or funds that utilize different ESG criteria.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_FixedIncomeSecuritiesRiskMember"
      id="ab824c12-7cff-45d6-af4e-6c25234bf767">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Fixed-income securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;A rise in interest rates typically causes bond prices to fall. The longer the average maturity or duration of the bonds held by a fund, the more sensitive it will likely be to interest-rate fluctuations. An issuer may not make all interest payments or repay all or any of the principal borrowed. Changes in a security&#x2019;s credit quality may adversely affect fund performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_ForeignSecuritiesRiskMember"
      id="x_987c895c-5296-47da-b494-9129defaaad0">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Foreign securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Less information may be publicly available regarding foreign issuers, including foreign government issuers. Foreign securities may be subject to foreign taxes and may be more volatile than U.S. securities. Currency fluctuations and political and economic developments may adversely impact the value of foreign securities.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_HedgingDerivativesAndOtherStrategicTransactionsRiskMember"
      id="ac9ec7aa-27a8-498f-a6e6-a75aa2688b38">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Hedging, derivatives, and other strategic transactions risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Hedging, derivatives, and other strategic transactions may increase a fund&#x2019;s volatility and could produce disproportionate losses, potentially more than the fund&#x2019;s principal investment. Risks of these transactions are different from and possibly greater than risks of investing directly in securities and other traditional instruments. Under certain market conditions, derivatives could become harder to value or sell and may become subject to liquidity risk (i.e., the inability to enter into closing transactions). Derivatives and other strategic transactions that the fund intends to utilize include: credit default swaps, foreign currency forward contracts, foreign currency swaps, futures contracts, interest-rate swaps, options on futures, and options. Foreign currency forward contracts, futures contracts, options, and swaps generally are subject to counterparty risk. In addition, swaps may be subject to interest-rate and settlement risk, and the risk of default of the underlying reference obligation. Derivatives associated with foreign currency transactions are subject to currency risk.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_HighPortfolioTurnoverRiskMember"
      id="x_9855a4b6-ec80-42af-873b-4c95033dbc37">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;High portfolio turnover risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Trading securities actively and frequently can increase transaction costs (thus lowering performance) and taxable distributions.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_LargeShareholderRiskMember"
      id="x_130dd51d-3e5d-4383-9123-28da65c91fca">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Large shareholder risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;A significant portion of a fund&#x2019;s shares may be owned by one or more large shareholders, including investment vehicles and institutional investors. Transactions by these large shareholders may be disruptive to the management of the fund. For example, the fund may experience large redemptions and could be required to sell securities at a time when it may not otherwise desire to do so. Such transactions may increase the fund&#x2019;s brokerage and/or other transaction costs, which could adversely impact fund performance. In addition, sizeable redemptions could cause the fund&#x2019;s total expenses to increase. Large redemptions could also require the fund to make taxable distributions to shareholders, which may be borne disproportionately by non-redeeming shareholders.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_LiquidityRiskMember"
      id="x_38506bbe-2526-43b5-92b0-9df67a9f6903">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Liquidity risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The extent (if at all) to which a security may be sold or a derivative position closed without negatively impacting its market value may be impaired by reduced market activity or participation, legal restrictions, or other economic and market impediments. Liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Widespread selling of fixed-income securities to satisfy redemptions during periods of reduced demand may adversely impact the price or salability of such securities. Periods of heavy redemption could cause the fund to sell assets at a loss or depressed value, which could negatively affect performance. Redemption risk is heightened during periods of declining or illiquid markets.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_LowerRatedAndHighYieldFixedIncomeSecuritiesRiskMember"
      id="x_6a787dd3-3040-495b-b7db-f1adea6ec344">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Lower-rated and high-yield fixed-income securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Lower-rated and high-yield fixed-income securities (junk bonds) are subject to greater credit quality risk, risk of default, and price volatility than higher-rated fixed-income securities, may be considered speculative, and can be difficult to resell.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_MortgageBackedAndAssetBackedSecuritiesRiskMember"
      id="a867f60e-8478-4828-9c16-6bc1574a539e">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Mortgage-backed and asset-backed securities risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Mortgage-backed and asset-backed securities are subject to different combinations of prepayment, extension, interest-rate, and other market risks. Factors that impact the value of these securities include interest rate changes, the reliability of available information, credit quality or enhancement, and market perception.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_OperationalAndCybersecurityRiskMember"
      id="bdb2311f-abe8-4c4b-b4c4-41a947c11b75">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Operational and cybersecurity risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Cybersecurity breaches may allow an unauthorized party to gain access to fund assets, customer data, or proprietary information, or cause a fund or its service providers to suffer data corruption or lose operational functionality. Similar incidents affecting issuers of a fund&#x2019;s securities may negatively impact performance. Operational risk may arise from human error, error by third parties, communication errors, or technology failures, among other causes.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_SectorRiskMember"
      id="x_14734bdf-de1d-4be9-b2f2-9c597711a524">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Sector risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;When a fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the fund were invested more evenly across sectors.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_USGovernmentAgencyObligationsRiskMember"
      id="x_23091dc3-1af9-420b-ae54-32785280f921">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;U.S. government agency obligations risk.&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:9pt;"&gt;The fund invests in obligations issued by agencies and instrumentalities of the U.S. government. U.S. government-sponsored entities such as Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) and the Federal Home Loan Banks, although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt securities that they issue are neither guaranteed nor issued by the U.S. government. Such debt securities are subject to the risk of default on the payment of interest and/or principal, similar to the debt securities of private issuers. The maximum potential liability of the issuers of some U.S. government obligations may greatly exceed their current resources, including any legal right to support from the U.S. government. Although the U.S. government has provided financial support to Fannie Mae and Freddie Mac in the past, there can be no assurance that it will support these or other government-sponsored entities in the future.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_60b89fbf-d21e-4169-8818-15bf9e6b7cd9">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;"&gt;Past performance&lt;/span&gt;</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_0c9d408b-64e2-42eb-9bb3-d9cbcc80df69">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The following information illustrates the variability of the fund&#x2019;s returns and provides some indication of the risks of investing in the fund by showing changes in the fund&#x2019;s performance from year to year and by showing how the fund&#x2019;s average annual returns compared with a broad-based securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;market index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Past performance (before and after taxes) does not indicate future results.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; All figures assume dividend reinvestment. Performance information is updated daily, monthly, and quarterly and may be obtained by calling &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;800-344-1029 between 8:00&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt;a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; and 7:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt;p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, Eastern time, on most business days&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;tax-advantaged investment plan.&lt;/span&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_77aec0bc-dc23-4c8b-ad21-f171559875a6">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;The following information illustrates the variability of the fund&#x2019;s returns and provides some indication of the risks of investing in the fund by showing changes in the fund&#x2019;s performance from year to year and by showing how the fund&#x2019;s average annual returns compared with a broad-based securities &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;market index.&lt;/span&gt;</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_55f132fa-22cb-4a00-a190-0988f3d17a69">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Past performance (before and after taxes) does not indicate future results.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityPhone
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="e392b95a-9542-4962-b15c-b87fd0929e83">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;800-344-1029 between 8:00&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt;a.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; and 7:00&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;"&gt;p.m.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;, Eastern time, on most business days&lt;/span&gt;</oef:PerformanceAvailabilityPhone>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_74d7bb22-5759-45b9-a086-0ec7751288a0">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes.&lt;/span&gt;</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_897e56b2-4d3e-4fb1-92c6-3ef0d94a6315">&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt; Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"&gt;tax-advantaged investment plan.&lt;/span&gt;</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="cc737495-e598-4597-a2f4-933f547c54f2">&lt;span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;"&gt;Calendar year total returns (%)&#x2014;Class NAV&lt;/span&gt;</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_097ae40e-6130-4553-9d0f-2324817823df">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Year-to-date total return through:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q2 2026&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;0.74%&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Best quarter:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q4 2023&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;7.09%&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Worst quarter:&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;Q2 2022&lt;/span&gt;&lt;span style="font-family:Arial Narrow;font-size:8pt;"&gt;-6.94%&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:YearToDateReturnLabel
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_1d4b60ad-399b-4ad0-9283-c3f5f1520478">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Year-to-date total return through:&lt;/span&gt;</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_958ad743-d58f-4e22-bb6f-10d875218cfd">2026-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_63282c93-6101-48b1-b0cb-0fd8a9a0abf1"
      unitRef="pure">0.0074</oef:BarChartYearToDateReturn>
    <oef:HighestQuarterlyReturnLabel
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_53176383-1fd5-4bf2-ba5c-253e2de7c7b4">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Best quarter:&lt;/span&gt;</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_0a462971-dae0-4295-bdb9-85bc1d73b47d">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_6dc99219-7d7e-4d93-b07e-c851c47a2b4a"
      unitRef="pure">0.0709</oef:BarChartHighestQuarterlyReturn>
    <oef:LowestQuarterlyReturnLabel
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_521723a4-523b-47d3-87b5-fe5972f5789f">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Worst quarter:&lt;/span&gt;</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      id="x_4ecb52c4-9d45-4055-bbcb-687f96dfdcdb">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="JohnHancockBondFundClassNAVMember_S000000646_C000153977"
      decimals="4"
      id="x_40a340c8-c03d-433a-9437-3268f05edd75"
      unitRef="pure">-0.0694</oef:BarChartLowestQuarterlyReturn>
    <oef:PerformanceTableHeading
      contextRef="JohnHancockBondFundClassNAVMember_S000000646"
      id="x_4e6fc437-23dd-4892-bdbc-2f8f0f122e66">&lt;span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;"&gt;Average annual total returns (%)&#x2014;as of 12/31/2025&lt;/span&gt;</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_01Jan2025_31Dec2025"
      decimals="4"
      id="x_71678efa-300a-46a9-9757-bc48ee68eb3c"
      unitRef="pure">0.0778</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_01Jan2021_31Dec2025"
      decimals="4"
      id="x_6248006e-b30d-4829-9d51-630f2ce49e6e"
      unitRef="pure">0.0016</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_01Jan2016_31Dec2025"
      decimals="4"
      id="x_3dcc00e4-66ee-4641-9c05-f4ec425d1823"
      unitRef="pure">0.0292</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_AfterTaxesOnDistributionsMember_01Jan2025_31Dec2025"
      decimals="4"
      id="f634737a-0611-471c-b53f-a627ac3430bb"
      unitRef="pure">0.0574</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_AfterTaxesOnDistributionsMember_01Jan2021_31Dec2025"
      decimals="4"
      id="x_03e49265-062e-4e0c-86f8-acbf00795ac4"
      unitRef="pure">-0.0154</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="JohnHancockBondFundClassNAVMember_C000153977_AfterTaxesOnDistributionsMember_01Jan2016_31Dec2025"
      decimals="4"
      id="x_6ef498a6-e823-404c-aafc-81403171e64e"
      unitRef="pure">0.0121</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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