Stock Repurchase Program (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended			1 Months Ended	6 Months Ended	3 Months Ended		1 Months Ended
	Dec. 14, 2011	Sep. 01, 2011	Sep. 10, 2010	Sep. 30, 2011	Dec. 25, 2011	Dec. 25, 2011 Share Repurchase Arrangements, One [Member]	Dec. 25, 2011 Share Repurchase Arrangements, Two [Member]	Jan. 31, 2012 Share Repurchase Arrangements, Three [Member]
Stock Repurchase Program [Line Items]
Authorized repurchase of Company common stock	$ 1,600	$ 500	$ 250	$ 500
Number of shares entitled for receipt in repurchase						2,600,000
Cash paid under structured share repurchase agreement						100.0
Cash received in structured share repurchase agreement							51.0
Cash entitled under structured share repurchase agreement								79.2
Net share settlements to cover tax withholding obligations					182,000
Upfront payment for share repurchases, settled					75.0
Amount paid for shares under net share settlements					$ 7.8