Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share

Component of income from continuing operations and share data used in basic and diluted earnings per share

(in millions except share and per share amounts)	2015			2014			2013
Numerator:
Income from continuing operations	$	319.6		$	251.7		$	235.2
Less: dividends declared—common stock outstanding, restricted shares and restricted share units		(72.3	)		(61.2	)		(53.7	)
Undistributed earnings		247.3			190.5			181.5
Percent allocated to common shareholders(1)		99.3	%		99.5	%		99.5	%
		245.6			189.5			180.6
Add: dividends declared—common stock		71.4			60.4			53.4
Numerator for basic and diluted EPS	$	317.0		$	249.9		$	234.0
Denominator (in thousands):
Denominator for basic EPS: weighted-average common shares outstanding		64,844			64,170			63,471
Effect of dilutive securities:
Performance awards		253			362			416
Stock options		707			772			919
Denominator for diluted EPS: adjusted weighted-average common shares outstanding and assumed conversion		65,804			65,304			64,806
Per share income from continuing operations:
Basic	$	4.89		$	3.89		$	3.69
Diluted	$	4.82		$	3.83		$	3.61

(1)	Basic weighted-average common shares outstanding	64,844		64,170		63,471
	Basic weighted-average common shares outstanding, unvested restricted shares expected to vest and restricted share units	65,304		64,512		63,797
	Percent allocated to common shareholders	99.3	%	99.5	%	99.5	%

Component of income (loss) from discontinued operations and share data used in basic and diluted earnings per share

(in millions)	2015		2014			2013
Income (loss) from discontinued operations attributable to common shareholders for basic and diluted earnings per share	$	0.1	$	(0.4	)	$	(25.4	)
Net income attributable to common shareholders for basic and diluted earnings per share	$	317.1	$	249.5		$	208.6
Antidilutive stock options excluded from EPS calculation(1)		257.5		—			—

(1)           Represents stock options excluded from the calculation of diluted earnings per share as such options' assumed proceeds upon exercise would result in the repurchase of shares generated than the underlying award.