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Accounts Receivable (Activity in the Allowance for Doubtful Accounts) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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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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| Allowance for Doubtful Accounts Receivable [Roll Forward] | |||
| Balance beginning of year | $ 74 | $ 79 | $ 66 |
| Additions charged to expense | 81 | 75 | 68 |
| Deductions write-offs | (72) | (80) | (55) |
| Balance end of year | $ 83 | $ 74 | $ 79 |
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- Definition
For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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