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Other Expenses (Other Restructuring Charges) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Restructuring Charges
Balance, beginning of period	$ 20	$ 27	$ 23	$ 0
Restructuring charges	16	20	49	47
Cash payments	(15)	(26)	(51)	(26)
Balance, end of period	21	21	21	21
Total restructuring charges incurred since inception of initiative	$ 208	$ 47	$ 208	$ 47

Amount of costs incurred to date for the specified type of restructuring cost.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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