Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Basic and Diluted Earnings Per Share

The following is a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per share available to common stockholders:



	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2017		2018		2017		2018
Numerator
Net income (controlling interest)	$	126.3	$	117.0	$	248.8	$	270.0
Interest expense on convertible securities, net of taxes	3.9		—		7.8		9.5
Net income (controlling interest), as adjusted	$	130.2	$	117.0	$	256.6	$	279.5
Denominator
Average shares outstanding (basic)	56.3		54.0		56.5		54.3
Effect of dilutive instruments:
Stock options and restricted stock units	0.2		0.2		0.3		0.3
Convertible securities	2.2		—		2.2		2.2
Average shares outstanding (diluted)	58.7		54.2		59.0		56.8

Schedule of Shares Excluded from Calculation of Basic and Diluted Earnings Per Share

Average shares outstanding (diluted) in the table above excludes share-based awards that have not satisfied performance conditions and the anti-dilutive effect of the following share-based awards:



	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2017	2018	2017	2018
Stock options and restricted stock units	0.2	0.2	0.2	0.2
Convertible securities	—	2.2	—	—