Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net income from continuing operations, net of income attributable to non-controlling interests	$ 133.5	$ 177.5	$ 354.8	$ 449.3
Denominator:
Denominator for basic earnings per common share-weighted average shares (in shares)	171.9	195.8	176.2	198.9
Effect of dilutive securities (in shares)	5.1	7.6	5.3	7.0
Denominator for diluted earnings per common share-adjusted weighted average shares (in shares)	177.0	203.4	181.5	205.9
Basic earnings per common share (in dollars per share)	$ 0.78	$ 0.91	$ 2.01	$ 2.26
Diluted earnings per common share (in dollars per share)	$ 0.75	$ 0.87	$ 1.95	$ 2.18
Shares excluded from diluted earnings per common share computation as anti-dilutive (in shares)	1.5		0.8