Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	$ (1,252.3)	$ (1,213.8)
Other comprehensive income (loss) before reclassifications	27.4	(36.1)
Reclassification from accumulated other comprehensive income (loss)	2.3	3.7
March 31	(1,222.6)	(1,246.2)
Cash Flow Hedge
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(16.1)	(20.1)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Reclassification from accumulated other comprehensive income (loss)	1.0	1.0
March 31	(15.1)	(19.1)
Defined Benefit Pension Plans and Postemployment Arrangements
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(90.4)	(123.2)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Reclassification from accumulated other comprehensive income (loss)	1.3	2.7
March 31	(89.1)	(120.5)
Foreign Currency Translation
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(1,145.8)	(1,070.5)
Other comprehensive income (loss) before reclassifications	27.4	(36.1)
Reclassification from accumulated other comprehensive income (loss)	0.0	0.0
March 31	$ (1,118.4)	$ (1,106.6)