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SCHEDULE II NATIONAL OILWELL VARCO, INC. VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2013
Valuation And Qualifying Accounts [Abstract] |
SCHEDULE II NATIONAL OILWELL VARCO, INC. VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II NATIONAL OILWELL VARCO, INC. VALUATION AND QUALIFYING ACCOUNTS Years Ended December 31, 2013, 2012 and 2011 (in millions)
|  | Balance beginning of year |  |  | Additions (Deductions) charged to costs and expenses |  |  | Charge off’s and other |  |  | Balance end of year |
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  | $ | 120 |  |  | $ | 32 |  |  | $ | (20 | ) |  | $ | 132 |
2012 |  |  | 107 |  |  |  | 6 |  |  |  | 7 |  |  |  | 120 |
2011 |  |  | 107 |  |  |  | 9 |  |  |  | (9 | ) |  |  | 107 |
Allowance for excess and obsolete inventories: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  | $ | 338 |  |  | $ | 89 |  |  | $ | (31 | ) |  | $ | 396 |
2012 |  |  | 281 |  |  |  | 99 |  |  |  | (42 | ) |  |  | 338 |
2011 |  |  | 270 |  |  |  | 70 |  |  |  | (59 | ) |  |  | 281 |
Valuation allowance for deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  | $ | 93 |  |  | $ | 40 |  |  | $ | — |  |  | $ | 133 |
2012 |  |  | 13 |  |  |  | 80 |  |  |  | — |  |  |  | 93 |
2011 |  |  | 9 |  |  |  | 4 |  |  |  | — |  |  |  | 13 |
Warranty reserve: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  | $ | 194 |  |  | $ | 101 |  |  | $ | (67 | ) |  | $ | 228 |
2012 |  |  | 211 |  |  |  | 51 |  |  |  | (68 | ) |  |  | 194 |
2011 |  |  | 215 |  |  |  | 40 |  |  |  | (44 | ) |  |  | 211 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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