Equity (Components of Shareholders' Equity) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Payments for Repurchase of Common Stock	$ 0.0	$ 250.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	7,312.4	7,064.8
Net earnings	(25.9)	203.7
Total comprehensive income (loss)	(84.5)	209.6
Share-based compensation	27.6	29.0
Dividends declared to noncontrolling interests	(6.1)	(9.3)
Shares issued under incentive plans, net		(6.3)
Repurchase of ordinary shares		(250.0)
Ending balance	5,789.8	6,922.8
Other		(0.1)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	44.8	42.1
Net earnings	3.3	3.8
Dividends declared to noncontrolling interests	(6.1)	(9.3)
Ending balance	$ 17.2	$ 37.0