Pension and Other Postretirement Benefits (Schedule Of Fair Value Of Pension Plan Assets) (Details) - USD ($)
$ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
$ 323.7
|
|
| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
$ 305.1
|
|
|
| Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
672.6
|
677.0
|
|
| Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Fair Value, Inputs, Level 1, 2 and 3 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
1,596.4
|
1,579.9
|
|
| Pension Plan |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
1,330.6
|
1,327.6
|
|
| Pension Plan | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
|
114.4
|
|
| Pension Plan | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
88.4
|
|
|
| Pension Plan | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
673.2
|
677.1
|
|
| Pension Plan | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
0.0
|
0.0
|
|
| Pension Plan | Fair Value, Inputs, Level 1, 2 and 3 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
1,336.1
|
1,336.5
|
$ 1,426.8
|
| Pension Plan | Cash [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.5
|
1.2
|
|
| Pension Plan | Cash [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
1.1
|
|
| Pension Plan | Cash [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.5
|
|
|
| Pension Plan | Cash [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.1
|
|
| Pension Plan | Cash [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
137.5
|
122.5
|
|
| Pension Plan | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
869.0
|
891.2
|
|
| Pension Plan | Fixed Income | Government |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
197.1
|
186.8
|
|
| Pension Plan | Fixed Income | Government | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Fixed Income | Government | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Fixed Income | Government | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
197.1
|
186.8
|
|
| Pension Plan | Fixed Income | Government | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Fixed Income | Corporate/Other debt securities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
471.5
|
486.6
|
|
| Pension Plan | Fixed Income | Corporate/Other debt securities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Fixed Income | Corporate/Other debt securities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Fixed Income | Corporate/Other debt securities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
471.5
|
486.6
|
|
| Pension Plan | Fixed Income | Corporate/Other debt securities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Fixed Income | Mortgages/ Asset backed securities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
3.9
|
3.6
|
|
| Pension Plan | Fixed Income | Mortgages/ Asset backed securities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Fixed Income | Mortgages/ Asset backed securities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
3.9
|
3.6
|
|
| Pension Plan | Fixed Income | Mortgages/ Asset backed securities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Fixed Income | Other Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.1
|
|
|
| Pension Plan | Fixed Income | Other Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Fixed Income | Other Fixed Income | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.1
|
|
|
| Pension Plan | Fixed Income | Other Fixed Income | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Commingled Funds | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
103.6
|
65.3
|
|
| Pension Plan | Commingled Funds | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Commingled Funds | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Commingled Funds | International Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | International Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
196.5
|
214.1
|
|
| Pension Plan | Commingled Funds | Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Commingled Funds | Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Commingled Funds | Fixed Income | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | Fixed Income | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | United States Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
216.1
|
202.8
|
|
| Pension Plan | Commingled Funds | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Commingled Funds | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Commingled Funds | United States Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | United States Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | Short-Term Money Markets |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
50.1
|
45.9
|
|
| Pension Plan | Commingled Funds | Short-Term Money Markets | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Commingled Funds | Short-Term Money Markets | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Commingled Funds | Short-Term Money Markets | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Commingled Funds | Short-Term Money Markets | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | U.S. Multi-Strategy [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
2.4
|
3.1
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | U.S. Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | U.S. Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | U.S. Multi-Strategy [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | U.S. Multi-Strategy [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | International Multi-Strategy [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.2
|
0.8
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | International Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | International Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | International Multi-Strategy [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | International Multi-Strategy [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | Distressed Opportunities [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.1
|
0.1
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | Distressed Opportunities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | Distressed Opportunities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | Distressed Opportunities [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Private Equity Limited Partnerships [Member] | Distressed Opportunities [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Real Estate [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
4.0
|
|
| Pension Plan | Real Estate [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Real Estate [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Real Estate [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Mutual Funds [Member] | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
34.0
|
57.2
|
|
| Pension Plan | Mutual Funds [Member] | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
57.2
|
|
| Pension Plan | Mutual Funds [Member] | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
34.0
|
|
|
| Pension Plan | Mutual Funds [Member] | International Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Mutual Funds [Member] | International Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Mutual Funds [Member] | U.S. Multi-Strategy [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
53.9
|
56.1
|
|
| Pension Plan | Mutual Funds [Member] | U.S. Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
56.1
|
|
| Pension Plan | Mutual Funds [Member] | U.S. Multi-Strategy [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
53.9
|
|
|
| Pension Plan | Mutual Funds [Member] | U.S. Multi-Strategy [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Mutual Funds [Member] | U.S. Multi-Strategy [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Pension Plan | Derivative | Derivative |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.6
|
|
|
| Pension Plan | Derivative | Derivative | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Pension Plan | Derivative | Derivative | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.6
|
|
|
| Pension Plan | Derivative | Derivative | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Other Postretirement Benefits |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
258.1
|
243.5
|
|
| Other Postretirement Benefits | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
|
200.4
|
|
| Other Postretirement Benefits | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
208.4
|
|
|
| Other Postretirement Benefits | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Fair Value, Inputs, Level 1, 2 and 3 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
257.6
|
243.2
|
$ 236.5
|
| Other Postretirement Benefits | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
48.8
|
40.7
|
|
| Other Postretirement Benefits | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
99.2
|
96.5
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
(0.6)
|
(0.1)
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
(0.6)
|
(0.1)
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Accrued Investment Income Dividends [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
8.3
|
8.9
|
|
| Other Postretirement Benefits | Accrued Investment Income Dividends [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
8.3
|
8.9
|
|
| Other Postretirement Benefits | Accrued Investment Income Dividends [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Other Postretirement Benefits | Accrued Investment Income Dividends [Member] | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
32.1
|
24.2
|
|
| Other Postretirement Benefits | Commingled Funds | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Other Postretirement Benefits | Commingled Funds | International Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | International Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | United States Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
13.0
|
12.2
|
|
| Other Postretirement Benefits | Commingled Funds | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Other Postretirement Benefits | Commingled Funds | United States Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | United States Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | Short-Term Money Markets |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
4.6
|
6.7
|
|
| Other Postretirement Benefits | Commingled Funds | Short-Term Money Markets | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | Short-Term Money Markets | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
|
|
| Other Postretirement Benefits | Commingled Funds | Short-Term Money Markets | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Commingled Funds | Short-Term Money Markets | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
16.8
|
16.5
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
16.5
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | International Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
16.8
|
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | International Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | International Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
99.2
|
96.5
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
96.5
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
99.2
|
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | Fixed Income | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | Fixed Income | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | United States Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
92.4
|
87.4
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
87.4
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | United States Equities | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Recurring |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
92.4
|
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | United States Equities | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Other Postretirement Benefits | Mutual Funds [Member] | United States Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.0
|
0.0
|
|
| Underfunded Plan [Member] | Pension Plan |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
$ 1,336.1
|
$ 1,336.4
|
|