Shareholder Report
|
12 Months Ended |
|
Apr. 30, 2026
USD ($)
Holding
|
|---|
| Shareholder Report [Line Items] |
|
| Document Type |
N-CSR
|
| Amendment Flag |
false
|
| Registrant Name |
Federated Hermes Money Market Obligations Trust
|
| Entity Central Index Key |
0000856517
|
| Entity Investment Company Type |
N-1A
|
| Document Period End Date |
Apr. 30, 2026
|
| C000242775 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Select Shares
|
| Trading Symbol |
UTEXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Select Shares |
$18 |
0.18% |
|
| Expenses Paid, Amount |
$ 18
|
| Expense Ratio, Percent |
0.18%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000259499 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Cash Reserve Shares
|
| Trading Symbol |
UTRXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 2, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the period? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Cash Reserve Shares |
$20 |
0.20% |
|
| Expenses Paid, Amount |
$ 20
|
| Expense Ratio, Percent |
0.20%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000026172 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
UTIXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Institutional Shares |
$20 |
0.20% |
|
| Expenses Paid, Amount |
$ 20
|
| Expense Ratio, Percent |
0.20%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000242772 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Premier Shares
|
| Trading Symbol |
UTPXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Premier Shares |
$15 |
0.15% |
|
| Expenses Paid, Amount |
$ 15
|
| Expense Ratio, Percent |
0.15%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000242773 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Administrative Shares
|
| Trading Symbol |
UTDXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Administrative Shares |
$46 |
0.45% |
|
| Expenses Paid, Amount |
$ 46
|
| Expense Ratio, Percent |
0.45%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000026171 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Service Shares
|
| Trading Symbol |
TISXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Service Shares |
$44 |
0.43% |
|
| Expenses Paid, Amount |
$ 44
|
| Expense Ratio, Percent |
0.43%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
| C000242774 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes U.S. Treasury Cash Reserves
|
| Class Name |
Advisor Shares
|
| Trading Symbol |
UTVXX
|
| Annual or Semi-Annual Statement [Text Block] |
This annual shareholder report contains important information about the Federated Hermes U.S. Treasury Cash Reserves (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
|
| Shareholder Report Annual or Semi-Annual |
annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1‑800‑341‑7400, Option 4, or your financial advisor.
|
| Additional Information Phone Number |
1‑800‑341‑7400
|
| Additional Information Website |
FederatedHermes.com/us/FundInformation
|
| Expenses [Text Block] |
What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment)
| Class Name |
Costs of a $10,000 investment |
Costs paid as a percentage of a $10,000 investment |
| Advisor Shares |
$15 |
0.15% |
|
| Expenses Paid, Amount |
$ 15
|
| Expense Ratio, Percent |
0.15%
|
| Net Assets |
$ 67,398,592,540
|
| Holdings Count | Holding |
61
|
| Advisory Fees Paid, Amount |
$ 46,787,715
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$67,398,592,540 |
| Number of Investments |
61 |
| Total Advisory Fees Paid |
$46,787,715 |
|
| Holdings [Text Block] |
Fund Holdings Top Security Types
(% of Net Assets) Effective Maturity Schedule
(% of Net Assets)
|
