XML 75 R27.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2014
Equity [Abstract] |
Components of Accumulated Other Comprehensive Income (Loss) | The components of accumulated other comprehensive income (loss) are as follows (in millions):
|  | Currency Translation Adjustments |  |  | Derivative Financial Instruments, Net of Tax |  |  | Defined Benefit Plans, Net of Tax |  |  | Total |
Balance at December 31, 2013 |  | $ | 17 |  |  | $ | 5 |  |  | $ | (26 | ) |  | $ | (4 | )
Accumulated other comprehensive income (loss) before reclassifications |  |  | 63 |  |  |  | 6 |  |  |  | — |  |  |  | 69 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | (17 | ) |  |  | — |  |  |  | (17 | )
Balance at June 30, 2014 |  | $ | 80 |  |  | $ | (6 | ) |  | $ | (26 | ) |  | $ | 48 |
Components of Amounts Reclassified from Accumulated Other Comprehensive Income Loss | The components of amounts reclassified from accumulated other comprehensive income (loss) are as follows (in millions):
|  | Three Months Ended June 30, |
|  | 2014 |  |  | 2013 |
|  | Currency Translation Adjustments |  |  | Derivative Financial Instruments |  |  | Defined Benefit Plans |  |  | Total |  |  | Currency Translation Adjustments |  |  | Derivative Financial Instruments |  |  | Defined Benefit Plans |  |  | Total |
Revenue |  | $ | — |  |  | $ | (8 | ) |  | $ | — |  |  | $ | (17 | ) |  | $ | — |  |  | $ | (2 | ) |  | $ | — |  |  | $ | (2 | )
Cost of revenue |  |  | — |  |  |  | (4 | ) |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | 4 |  |  |  | — |  |  |  | 4 |
Other income (expense), net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | (25 | )
Tax effect |  |  | — |  |  |  | 2 |  |  |  | — |  |  |  | 4 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
|  | $ | — |  |  | $ | (10 | ) |  | $ | — |  |  | $ | (15 | ) |  | $ | (25 | ) |  | $ | 2 |  |  | $ | — |  |  | $ | (23 | )
|  | Six Months Ended June 30, |
|  | 2014 |  |  | 2013 |
|  | Currency Translation Adjustments |  |  | Derivative Financial Instruments |  |  | Defined Benefit Plans |  |  | Total |  |  | Currency Translation Adjustments |  |  | Derivative Financial Instruments |  |  | Defined Benefit Plans |  |  | Total |
Revenue |  | $ | — |  |  | $ | (21 | ) |  | $ | — |  |  | $ | (21 | ) |  | $ | — |  |  | $ | (4 | ) |  | $ | — |  |  | $ | (4 | )
Cost of revenue |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 1 |
Other income (expense), net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | (25 | )
Tax effect |  |  | — |  |  |  | 5 |  |  |  | — |  |  |  | 5 |  |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 1 |
|  | $ | — |  |  | $ | (17 | ) |  | $ | — |  |  | $ | (17 | ) |  | $ | (25 | ) |  | $ | (2 | ) |  | $ | — |  |  | $ | (27 | )

X
- Definition Schedule of Reclassifications Out of Accumulated Other Comprehensive Income Loss [Table Text Block] + References No definition available. + Details
Name: | nov_ScheduleOfReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | nov_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration