Employee Benefits - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net periodic benefit cost:
Interest cost	$ 23.7	$ 30.7
Settlements - All Others	(12.1)	(64.7)	$ (2.7)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss (income):
Amortization of prior net losses	$ 8.6	$ 12.1	$ 12.7
Other Postretirement Benefits Plan
Net periodic benefit cost:
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Interest cost	$ 23.7	$ 30.7	$ 37.1
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Net of Tax	Other Comprehensive Income (Loss), Net of Tax	Other Comprehensive Income (Loss), Net of Tax
Expected return on plan assets	$ (33.8)	$ (48.0)	$ (61.1)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Amortization of prior net losses	$ 8.6	$ 12.1	$ 14.3
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Amortization of prior net service credit	$ (0.4)	$ (0.4)	$ (0.4)
Settlement - Annuitization(s)		$ 54.9
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax
Settlements - All Others	$ 12.1	$ 9.8	$ 3.6
Net periodic pension cost (benefit)	10.2	59.1	(6.5)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss (income):
Net actuarial (gains) losses and other adjustments	62.4	112.7	(216.7)
Settlement - Annuitization(s)		(54.9)
Settlements - All Others	(12.1)	(9.8)	(3.6)
Amortization of prior net losses	(8.6)	(12.1)	(14.3)
Amortization of prior net service credit	0.4	0.4	0.4
Total recognized in other comprehensive loss (income)	42.1	36.3	(234.2)
Total recognized in net periodic benefit cost and other comprehensive loss (income)	$ 52.3	$ 95.4	$ (240.7)