Condensed Consolidated Statements of Equity (Parenthetical) - $ / shares			3 Months Ended		6 Months Ended
	May 09, 2016	Feb. 25, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jul. 03, 2013
Dividends declared per common share (in dollars per share)	$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 0.96	$ 0.96
2019 Notes
Interest rate (as a percent)			4.00%	4.00%	4.00%	4.00%	4.00%