XML 63 R47.htm IDEA: XBRL DOCUMENT v3.6.0.2
Summary of Significant Accounting Policies - Identified Intangible Assets Identified by Segment (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Intangible Asset Excluding Goodwill [Line Items]    
Beginning Balance $ 3,849 $ 4,444
Additions to intangible assets 24 59
Asset impairment   (204)
Amortization (333) (356)
Currency translation adjustments and other (10) (94)
Ending Balance 3,530 3,849
Rig Systems [Member]    
Intangible Asset Excluding Goodwill [Line Items]    
Beginning Balance 176 208
Asset impairment   (7)
Amortization (15) (22)
Currency translation adjustments and other (1) (3)
Ending Balance 160 176
Rig Aftermarket [Member]    
Intangible Asset Excluding Goodwill [Line Items]    
Beginning Balance 123 133
Amortization (7) (6)
Currency translation adjustments and other (1) (4)
Ending Balance 115 123
Wellbore Technologies [Member]    
Intangible Asset Excluding Goodwill [Line Items]    
Beginning Balance 2,254 2,666
Additions to intangible assets 15 2
Asset impairment   (173)
Amortization (205) (214)
Currency translation adjustments and other   (27)
Ending Balance 2,064 2,254
Completion & Production Solutions [Member]    
Intangible Asset Excluding Goodwill [Line Items]    
Beginning Balance 1,296 1,437
Additions to intangible assets 9 57
Asset impairment   (24)
Amortization (106) (114)
Currency translation adjustments and other (8) (60)
Ending Balance $ 1,191 $ 1,296