Earnings per share (Tables)

9 Months Ended

Sep. 30, 2017

Schedule of Computation of Basic and Diluted EPS under Two-class Method

The computation of basic and diluted EPS under the two-class method were as follows:

(In millions, except per share amounts)	Three months ended				Nine months ended
	September 30, 2017		September 30, 2016		September 30, 2017		September 30, 2016
Numerator:
Basic and diluted:
Net income attributable to controlling interest	$	90.8	$	137.8	$	364.5	$	419.4
Participating share awards with dividend equivalent rights		0.0		—		0.0		—
Net income available to common shareholders		90.8		137.8		364.5		419.4
Earnings allocated to participating share awards¹⁾		0.0		—		0.0		—
Net income attributable to common shareholders	$	90.8	$	137.8	$	364.5	$	419.4

Denominator: ¹⁾
Basic: Weighted average common stock		86.9		88.2		87.7		88.2
Add: Weighted average stock options/share awards		0.3		0.3		0.2		0.2
Diluted:		87.2		88.5		87.9		88.4

Basic EPS	1.04		$	1.56	4.16		$	4.76
Diluted EPS	1.04		$	1.56	4.15		$	4.74

¹⁾

The Company’s unvested RSUs and PSs, of which some include the right to receive non-forfeitable dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method exclude from the numerator any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities. The related participating securities are similarly excluded from the denominator.