Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2015	Oct. 31, 2015
Class of Stock
Number of shares of common stock authorized	550,000,000
Number of shares of preferred stock authorized	15,000,000
Share repurchases, net of issuances	$ 99.5	$ 360.1	$ 398.8
Number of preferred stock purchase rights attached to each outstanding share of common stock	0.5
Number of series A junior participating preferred stock each right entitles the holder to purchase	one-thousandth
Exercise price per right (in dollars per share)	$ 185
Minimum percentage of outstanding common stock to be acquired to trigger rights exchanged for common stock	10.00%
Discount on purchase price of common stock of the entity on exercise of rights on acquisition of 10 percent or more of outstanding common stock (as a percent)	50.00%
Redemption price of rights (in dollars per share)	$ 0.001
Series A Junior Participating Preferred Stock
Class of Stock
Number of shares of preferred stock unissued	550,000
Latapack-Ball Embalagens Ltda. (Latapack-Ball)
Class of Stock
Treasury stock exchanged (in shares)				5,700,000	5,700,000