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Expenses (Costs Related To Acquisition And Restructuring) (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
Other Expenses [Abstract]
Acquisition costs	$ 19	$ 15	$ 34	$ 28
Restructuring charges, net	11	22	10	30
Total acquisition and restructuring costs	$ 30	$ 37	$ 44	$ 58

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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