Employee Benefit Plans and Other Postretirement Benefits - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax):
Accumulated benefit obligation for plans with obligations in excess of plan assets	$ 48.8	$ 44.7
Defined Benefit Plan, Pension Plan Benefit Obligation in Excess of Plan Assets, Plan Assets	$ 51.6	48.6
Weighted-Average expected return on plan assets for 2021	5.66%
Pension Contributions [Abstract]
Contributions to pension plan	$ 25.0	$ 25.0	$ 50.0
Company's common stock	1.1	1.1
Deferred compensation liability	$ 47.3	$ 40.5
Defined Benefit Plan, Plan Assets, Amount	$ 0.0	$ 0.0
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	$ 11.7	$ 10.1
Pension Plans
Amounts Recognized in Accumulated Other Comprehensive Loss (Income) (Pre-Tax):
Weighted-Average expected return on plan assets for 2021	5.71%	5.80%	5.52%
Pension Contributions [Abstract]
Contributions to pension plan	$ 1.3	$ 26.2
Defined Benefit Plan, Plan Assets, Amount	1,155.1	1,133.4	$ 1,161.6
Accumulated benefit obligation portion of above	1,130.8	1,098.7
Matching Contributions
Pension Contributions [Abstract]
Company's contribution to defined contribution plans	52.1	48.8	45.2
Service Related Contributions
Pension Contributions [Abstract]
Company's contribution to defined contribution plans	$ 52.5	$ 49.5	$ 45.4