Pension And Other Postretirement Benefit Programs Summary of Balance Sheet Impact of Postretirement Benefit Plans, Related Benefit Obligations, Assets, Funded Status Rate Assumptions (Details) - USD ($) |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Postretirement Benefits Plan | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Benefit obligations as of beginning of period | $ 65,300,000 | $ 62,200,000 | |
Service cost | 0 | 200,000 | $ 400,000 |
Interest cost | 1,900,000 | 2,500,000 | 2,600,000 |
Plan participants' contributions | 1,200,000 | 2,200,000 | |
Actuarial loss | (4,500,000) | (10,000,000.0) | |
Benefits paid | 6,900,000 | 9,200,000 | |
Benefit obligation as of end of period | 59,600,000 | 65,300,000 | 62,200,000 |
Fair value of plan assets as of beginning of period | 0 | 0 | |
Employer contribution | 5,700,000 | 7,000,000.0 | |
Plan participants' contribution | 1,200,000 | 2,200,000 | |
Benefits paid | 6,900,000 | 9,200,000 | |
Fair value of plan assets as of end of period | 0 | 0 | 0 |
Funded status of the plans | (59,600,000) | (65,300,000) | |
Pension Plan | United States | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Benefit obligations as of beginning of period | 394,600,000 | 346,400,000 | |
Service cost | 2,600,000 | 2,700,000 | 3,800,000 |
Interest cost | 12,500,000 | 15,000,000.0 | 14,600,000 |
Effect of plan curtailment | (900,000) | 0 | |
Actuarial loss | (30,400,000) | (49,200,000) | |
Benefits paid | 20,800,000 | 18,700,000 | |
Benefit obligation as of end of period | 418,400,000 | 394,600,000 | 346,400,000 |
Fair value of plan assets as of beginning of period | 380,700,000 | 337,100,000 | |
Employer contribution | 100,000 | 100,000 | |
Benefits paid | 20,800,000 | 18,700,000 | |
Fair value of plan assets as of end of period | 417,200,000 | 380,700,000 | $ 337,100,000 |
Funded status of the plans | $ (1,200,000) | $ (13,900,000) |
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- Definition Amount of (increase) decrease in accumulated benefit obligation of defined benefit plan from effects of settlement and curtailment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of contributions received by defined benefit plan from participant which increase benefit obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of contributions received by defined benefit plan from participant which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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