Accumulated Other Comprehensive Income (Loss) - Reclassifications (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Feb. 07, 2019		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Reclassifications out of AOCI [Line Items]
Other income (expense)- net	$ (86.0)	[1]	$ 14.9	$ (11.6)	[1]	$ (153.5)	[1]
Interest expense	5.5	[1]	206.4	271.1	[1]	303.5	[1]
Tax benefit (expense)	27.5	[1]	(23.4)	112.4	[1]	118.3	[1]
Reclassification out of Accumulated Other Comprehensive Income
Reclassifications out of AOCI [Line Items]
Interest expense	0.0		3.9	2.8		0.7
Total before tax	3.8		5.8	2.4		0.7
Tax benefit (expense)	(1.0)		(1.5)	(0.6)		(0.2)
Total reclassifications for the period, net of tax	2.8		4.3	1.8		0.5
Amortization of prior service costs | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications out of AOCI [Line Items]
Other income (expense)- net	(0.1)		(0.4)	(0.4)		0.0
Amortization of actuarial gain/loss | Reclassification out of Accumulated Other Comprehensive Income
Reclassifications out of AOCI [Line Items]
Other income (expense)- net	$ 3.9		$ 2.3	$ 0.0		$ 0.0

[1] See Note 1 Basis of Presentation and Description of Business for further detail regarding the elimination of the International lag reporting.