Equity, Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ 5,384.9
Balance at end of period	6,302.0	$ 5,384.9
Accumulated Other Comprehensive Loss
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(278.1)	(430.9)	$ (390.2)
Other comprehensive income (loss) before reclassification, net of tax	(28.8)	132.2	(56.0)
Amounts reclassified from Accumulated other comprehensive income (loss) to earnings, net of tax	20.4	20.6	15.3
Balance at end of period	(286.5)	(278.1)	(430.9)
Foreign Currency Translation Adjustment
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(86.6)	(237.9)	(197.5)
Other comprehensive income (loss) before reclassification, net of tax	(66.2)	151.3	(40.4)
Amounts reclassified from Accumulated other comprehensive income (loss) to earnings, net of tax	0.0	0.0	0.0
Balance at end of period	(152.8)	(86.6)	(237.9)
Foreign currency translation adjustments, tax	0.0	0.0	0.0
Unrealized Gain (Loss) on Hedging Activities
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	0.1	0.3	0.2
Other comprehensive income (loss) before reclassification, net of tax	0.0	(0.2)	0.1
Amounts reclassified from Accumulated other comprehensive income (loss) to earnings, net of tax	0.0	0.0	0.0
Balance at end of period	0.1	0.1	0.3
Unrealized (gain) loss on hedging activities, tax	0.0	0.0	0.0
Defined Benefit Plan Liability Adjustment
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(191.6)	(193.3)	(192.9)
Other comprehensive income (loss) before reclassification, net of tax	37.4	(18.9)	(15.7)
Amounts reclassified from Accumulated other comprehensive income (loss) to earnings, net of tax	20.4	20.6	15.3
Balance at end of period	(133.8)	(191.6)	(193.3)
Pension and postretirement benefit plan adjustment, tax	(12.3)	7.1	5.3
Amounts reclassified from Accumulated Other Comprehensive Income (Loss), tax	(6.6)	(6.7)	(4.9)
Net Investment Hedges [Member]
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from Accumulated other comprehensive income (loss) to earnings, net of tax	$ 0.0	$ 0.0	$ 0.0