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Significant Accounting Policies Other Details (Details) (USD $)
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3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2013
|
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| Acquired Finite-Lived Intangible Assets [Line Items] | |||||
| Cash equivalents | $ 342,000,000 | $ 424,000,000 | |||
| Customer returns | 2,036,000,000 | 1,965,000,000 | 1,900,000,000 | ||
| Advertising expense | 89,000,000 | 91,000,000 | 81,000,000 | ||
| Impairment of intangible assets, finite-lived | 47,000,000 | ||||
| Notional amount of interest rate derivative instruments not designated as hedging instruments | $ 3,100,000,000 | ||||
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Software Development [Member]
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| Acquired Finite-Lived Intangible Assets [Line Items] | |||||
| Finite-Lived Intangible Asset, Useful Life | 3 years | ||||