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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Accounts receivable, allowance for doubtful accounts | $ 309 | $ 273
Other intangible assets, accumulated amortization | 276 | 164
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 1,200,000,000 | 1,200,000,000
Common stock, shares issued | 810,679,839 | 807,573,277
Common stock, shares outstanding | 744,263,855 | 765,186,316
Treasury stock, shares | 66,415,984 | 42,386,961
Variable Interest Entity [Line Items] |  |
Non-recourse debt - current, balance at variable interest entities | 2,843 | 2,123
Non-recourse debt - noncurrent, balance at variable interest entities | 12,568 | 13,412
Consolidated Variable Interest Entities [Member] |  |
Variable Interest Entity [Line Items] |  |
Non-recourse debt - current, balance at variable interest entities | 287 | 259
Non-recourse debt - noncurrent, balance at variable interest entities | 1,187 | 1,156
Parent Company |  |
Deferred financing costs, accumulated amortization | $ 58 | $ 74

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- Definition The current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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