Pension and Other Postretirement Benefits (Schedule Of Fair Value Of Pension Plan Assets) (Details) - USD ($)
$ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
$ 360.6
|
|
| 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 |
$ 323.7
|
|
|
| Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
677.0
|
695.2
|
|
| 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 |
1,579.9
|
1,663.6
|
|
| Pension Plan |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
1,327.6
|
1,421.0
|
|
| 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 |
|
154.7
|
|
| 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 |
114.4
|
|
|
| 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 |
677.1
|
697.9
|
|
| 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 |
1,336.5
|
1,426.8
|
$ 1,422.8
|
| Pension Plan | Cash [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
1.2
|
2.2
|
|
| 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 |
|
2.0
|
|
| 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 |
1.1
|
|
|
| Pension Plan | Cash [Member] | Significant Other Observable Inputs (Level 2) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
0.1
|
0.2
|
|
| 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 |
122.5
|
141.9
|
|
| Pension Plan | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
891.2
|
939.9
|
|
| Pension Plan | Equity Securities [Member] | United States Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
1.1
|
|
| Pension Plan | Equity Securities [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 |
|
1.1
|
|
| Pension Plan | Equity Securities [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
|
|
| Pension Plan | Equity Securities [Member] | United States Equities | Significant Unobservable Inputs (Level 3) [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
|
0.0
|
|
| Pension Plan | Fixed Income | Government |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
186.8
|
213.1
|
|
| 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 |
186.8
|
213.1
|
|
| 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 |
486.6
|
482.2
|
|
| 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 |
486.6
|
482.2
|
|
| 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 |
3.6
|
2.4
|
|
| 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 |
3.6
|
2.4
|
|
| 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 | Commingled Funds | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
65.3
|
102.3
|
|
| 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 |
214.1
|
242.2
|
|
| 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 |
202.8
|
148.5
|
|
| 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 |
45.9
|
65.3
|
|
| 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 |
3.1
|
4.8
|
|
| 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 |
0.8
|
1.2
|
|
| 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 |
4.0
|
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 |
57.2
|
38.5
|
|
| 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 |
|
38.5
|
|
| 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 |
57.2
|
|
|
| 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 |
56.1
|
113.1
|
|
| 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 |
|
113.1
|
|
| 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 |
56.1
|
|
|
| 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
|
|
| Other Postretirement Benefits |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan Fair Value Of Plan Assets Before Pending Items |
243.5
|
236.8
|
|
| 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 |
|
197.4
|
|
| 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 |
200.4
|
|
|
| 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 |
243.2
|
236.5
|
$ 224.9
|
| Other Postretirement Benefits | International Equities |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
40.7
|
40.7
|
|
| Other Postretirement Benefits | Fixed Income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
96.5
|
97.0
|
|
| Other Postretirement Benefits | Due To Brokers Net [Member] |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Plan Assets, Amount |
(0.1)
|
(2.7)
|
|
| 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 |
(0.1)
|
(2.7)
|
|
| 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 |
8.9
|
8.5
|
|
| 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 |
8.9
|
8.5
|
|
| 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 |
24.2
|
22.8
|
|
| 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 |
12.2
|
11.4
|
|
| 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 |
6.7
|
5.2
|
|
| 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 |
16.5
|
18.0
|
|
| 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 |
|
18.0
|
|
| 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 |
16.5
|
|
|
| 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 |
96.5
|
97.0
|
|
| 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 |
|
97.0
|
|
| 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 |
96.5
|
|
|
| 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 |
87.4
|
82.4
|
|
| 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 |
|
82.4
|
|
| 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 |
87.4
|
|
|
| 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 |
$ 1,336.4
|
$ 1,426.8
|
|