XML 52 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share, amount 0.0 0.1 0.1 0.1
Earnings available to common stockholders $ 64.9 $ 17.3 $ 127.3 $ 29.9
Weighted average basic shares outstanding 181.9 182.5 182.3 182.4
Earnings per share - basic $ 0.36 $ 0.09 $ 0.70 $ 0.16
Earnings available to common stockholders, diluted $ 64.9 $ 17.3 $ 127.3 $ 29.9
Dilutive impact of stock based awards 7.4 1.9 7.5 1.8
Weighted average dilutive shares outstanding 189.3 184.4 189.8 184.2
Earnings per share - diluted $ 0.34 $ 0.09 $ 0.67 $ 0.16
Performance Shares [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share, amount 0.0 6.5 0.0 6.5