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Employee Benefit Plans and Other Postretirement Benefits - Additional Information (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax): |  |  |
Accumulated benefit obligation for plans with obligations in excess of plan assets | $ 1,400.0 |  |
Defined Benefit Plan, Pension Plan Benefit Obligation in Excess of Plan Assets, Plan Assets | $ 1,400.0 | $ 1,500.0 |
Weighted-Average expected return on plan assets for 2021 | 4.08% |  |
Pension Contributions [Abstract] |  |  |
Company's common stock | 1.2 | 1.2 |
Deferred compensation liability | $ 25.2 | $ 22.6 |
Minimum |  |  |
Pension Contributions [Abstract] |  |  |
Company's contribution to pension plan, percentage | 3.00% |  |
Maximum |  |  |
Pension Contributions [Abstract] |  |  |
Company's contribution to pension plan, percentage | 5.00% |  |
Pension Plans |  |  |
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax): |  |  |
Weighted-Average expected return on plan assets for 2021 | 4.91% | 5.29% | 6.06%
Pension Contributions [Abstract] |  |  |
Contributions to pension plan | $ 51.1 | $ 83.7 |
Pension Plans | Qualified Plan |  |  |
Pension Contributions [Abstract] |  |  |
Contributions to pension plan | 50.0 | 82.5 | $ 57.9
Matching Contributions |  |  |
Pension Contributions [Abstract] |  |  |
Company's contribution to defined contribution plans | 38.2 | 40.8 | 39.0
Service Related Contributions |  |  |
Pension Contributions [Abstract] |  |  |
Company's contribution to defined contribution plans | $ 46.4 | $ 39.4 | $ 36.7

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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920 + Details
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- Definition Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
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