Debt (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended
	Jan. 30, 2014 3.65% notes due 2021	Jan. 30, 2014 4.30% notes due 2024	Jan. 24, 2014 Term loan Beech
Debt
Debt instrument term			5 years
Face value of the notes	$ 250	$ 350	$ 500
Interest rate	3.65%	4.30%