CONSOLIDATED STATEMENT OF CHANGES IN EQUITY AND OTHER COMPREHENSIVE INCOME (Parenthetical) shares in Thousands, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares
Number of treasury shares repurchased | shares	150	2,100
Treasury shares repurchased	$ 14.1	$ 196.3
Common stock authorized amount for future purchases	$ 667.2	$ 667.2
Cash dividends, per share | $ / shares	$ 0.29	$ 0.87
Treasury stock purchased, per share | $ / shares	$ 95.34	$ 94.97
Accelerated Share Repurchase Program
Accelerated Share Repurchase Program, Adjustment	$ 0.0	$ 11.5