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Schedule II (Tables) | 12 Months Ended
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Dec. 31, 2012
Summary of Valuation Allowance [Table Text Block] |
(in millions) |  | Balance at Beginning Of Period |  |  | Charges to Earnings and Equity |  |  | Amounts Written Off |  |  | Balance at End of Period |
Year ended December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Deducted in the Statement of Financial Position: |  |  |  |  |  |  |  |  |  |  |  |
From Current Receivables: |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 39 |  |  | $ | 28 |  |  | $ | 17 |  |  | $ | 50 |
Reserve for loss on returns and allowances |  |  | 12 |  |  |  | 12 |  |  |  | 18 |  |  |  | 6 |
Total |  | $ | 51 |  |  | $ | 40 |  |  | $ | 35 |  |  | $ | 56 |
From Deferred Tax Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 2,560 |  |  | $ | 807 |  |  | $ | 529 |  |  | $ | 2,838 |
Year ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deducted in the Statement of Financial Position: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Current Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 63 |  |  | $ | 10 |  |  | $ | 34 |  |  | $ | 39 |
Reserve for loss on returns and allowances |  |  | 14 |  |  |  | 22 |  |  |  | 24 |  |  |  | 12 |
Total |  | $ | 77 |  |  | $ | 32 |  |  | $ | 58 |  |  | $ | 51 |
From Deferred Tax Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 2,335 |  |  | $ | 505 |  |  | $ | 280 |  |  | $ | 2,560 |
Year ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deducted in the Statement of Financial Position: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Current Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 79 |  |  | $ | 19 |  |  | $ | 35 |  |  | $ | 63 |
Reserve for loss on returns and allowances |  |  | 19 |  |  |  | 24 |  |  |  | 29 |  |  |  | 14 |
Total |  | $ | 98 |  |  | $ | 43 |  |  | $ | 64 |  |  | $ | 77 |
From Deferred Tax Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 2,092 |  |  | $ | 460 |  |  | $ | 217 |  |  | $ | 2,335 |

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Valuation Allowance -URI http://asc.fasb.org/extlink&oid=6528051 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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