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Summary Of Significant Accounting Policies - Subsequent events (Details) (USD $) In Billions, except Share data, unless otherwise specified	Oct. 02, 2013	Feb. 05, 2014 Subsequent Event [Member]	Jan. 24, 2014 Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	10,000,000	20,000,000	11,400,000
Accelerated Share Repurchases, Settlement (Payment) or Receipt			$ 1.2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		0.06

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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