Employee Benefit Plans and Other Postretirement Benefits - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax):
Accumulated benefit obligation for plans with obligations in excess of plan assets	$ 44.7	$ 42.9
Defined Benefit Plan, Pension Plan Benefit Obligation in Excess of Plan Assets, Plan Assets	$ 48.6	334.3
Weighted-Average expected return on plan assets for 2021	5.71%
Pension Contributions [Abstract]
Contributions to pension plan	$ 50.0	$ 25.0	$ 25.0
Company's common stock	1.1	1.1
Deferred compensation liability	$ 40.5	$ 31.0
Defined Benefit Plan, Plan Assets, Amount	$ 0.0	$ 267.2
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%
OPEB plans
Pension Contributions [Abstract]
Accumulated benefit obligation portion of above	$ 10.1	$ 10.5
Pension Plans
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax):
Weighted-Average expected return on plan assets for 2021	5.80%	5.52%	4.08%
Pension Contributions [Abstract]
Contributions to pension plan	$ 26.2	$ 51.5
Defined Benefit Plan, Plan Assets, Amount	1,133.4	1,161.6	$ 1,055.3
Accumulated benefit obligation portion of above	1,098.7	1,173.3
Matching Contributions
Pension Contributions [Abstract]
Company's contribution to defined contribution plans	48.8	45.2	44.3
Service Related Contributions
Pension Contributions [Abstract]
Company's contribution to defined contribution plans	$ 49.5	$ 45.4	$ 43.7