Accumulated Other Comprehensive Income (Loss) - Rollforward (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 13,407.2
Ending balance	13,389.0
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(778.0)
Tax benefit (expense)	(9.2)
Ending balance	(905.5)
Accumulated foreign currency adjustment, excluding net investment hedging, attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
OCI before reclassifications before tax	(144.3)
Accumulated foreign currency adjustment, net investment hedging, attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
OCI before reclassifications before tax	26.0
AOCI foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
OCI before reclassifications before tax	(144.3)
Gain (loss) on derivative instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	30.6
OCI before reclassifications before tax	39.7
Tax benefit (expense)	(9.8)
Ending balance	60.5
Pension and postretirement benefit adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(352.7)
Reclassification of AOCI, current period, before tax	(4.8)
Tax benefit (expense)	1.2
Ending balance	(356.3)
Equity method investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(16.2)
OCI before reclassifications before tax	0.3
Tax benefit (expense)	(0.1)
Ending balance	(16.0)
Accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,116.3)
Tax benefit (expense)	(17.9)
Ending balance	$ (1,217.3)