Compensation Expense Related to Stock Options, Stock Appreciation Rights and Restricted Stock Units (RSUs) (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortization Stock Based Compensation	$ 24	$ 9