Condensed Consolidated Statements Of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax (expense) benefit	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Net gains (losses) on hedging instruments, tax benefit	(1.9)	(6.7)	3.0	15.8
Net pension and other post-retirement benefits, tax (expense) benefit	$ (1.3)	$ (0.9)	$ (3.4)	$ (1.5)