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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue From Contract With Customer [Abstract] |
Summary of Disaggregate Revenue by Destinations | The following tables disaggregate our revenue by destinations, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. In the tables below, North America includes only the U.S. and Canada (in millions):
|  | Year Ended December 31, 2018 |
|  |  |  |  |  | Completion |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Wellbore |  |  | & Production |  |  | Rig |  |  |  |  |  |  |  |  |
|  | Technologies |  |  | Solutions |  |  | Technologies |  |  | Eliminations |  |  | Total |
North America |  | $ | 1,817 |  |  | $ | 1,302 |  |  | $ | 663 |  |  | $ | — |  |  | $ | 3,782 |
International |  |  | 1,345 |  |  |  | 1,543 |  |  |  | 1,783 |  |  |  | — |  |  |  | 4,671 |
Eliminations |  |  | 73 |  |  |  | 86 |  |  |  | 129 |  |  |  | (288 | ) |  |  | — |
|  | $ | 3,235 |  |  | $ | 2,931 |  |  | $ | 2,575 |  |  | $ | (288 | ) |  | $ | 8,453 |
Land |  | $ | 2,683 |  |  | $ | 1,985 |  |  | $ | 854 |  |  | $ | — |  |  | $ | 5,522 |
Offshore |  |  | 479 |  |  |  | 860 |  |  |  | 1,592 |  |  |  | — |  |  |  | 2,931 |
Eliminations |  |  | 73 |  |  |  | 86 |  |  |  | 129 |  |  |  | (288 | ) |  |  | — |
|  | $ | 3,235 |  |  | $ | 2,931 |  |  | $ | 2,575 |  |  | $ | (288 | ) |  | $ | 8,453 |
|  | Year Ended December 31, 2017 |
|  |  |  |  |  | Completion |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Wellbore |  |  | & Production |  |  | Rig |  |  |  |  |  |  |  |  |
|  | Technologies |  |  | Solutions |  |  | Technologies |  |  | Eliminations |  |  | Total |
North America |  | $ | 1,408 |  |  | $ | 1,093 |  |  | $ | 545 |  |  | $ | — |  |  | $ | 3,046 |
International |  |  | 1,116 |  |  |  | 1,528 |  |  |  | 1,614 |  |  |  | — |  |  |  | 4,258 |
Eliminations |  |  | 53 |  |  |  | 51 |  |  |  | 93 |  |  |  | (197 | ) |  |  | — |
|  | $ | 2,577 |  |  | $ | 2,672 |  |  | $ | 2,252 |  |  | $ | (197 | ) |  | $ | 7,304 |
Land |  | $ | 2,047 |  |  | $ | 1,752 |  |  | $ | 740 |  |  | $ | — |  |  | $ | 4,539 |
Offshore |  |  | 477 |  |  |  | 869 |  |  |  | 1,419 |  |  |  | — |  |  |  | 2,765 |
Eliminations |  |  | 53 |  |  |  | 51 |  |  |  | 93 |  |  |  | (197 | ) |  |  | — |
|  | $ | 2,577 |  |  | $ | 2,672 |  |  | $ | 2,252 |  |  | $ | (197 | ) |  | $ | 7,304 |
|  | Year Ended December 31, 2016 |
|  |  |  |  |  | Completion |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Wellbore |  |  | & Production |  |  | Rig |  |  |  |  |  |  |  |  |
|  | Technologies |  |  | Solutions |  |  | Technologies |  |  | Eliminations |  |  | Total |
North America |  | $ | 925 |  |  | $ | 793 |  |  | $ | 460 |  |  | $ | — |  |  | $ | 2,178 |
International |  |  | 1,104 |  |  |  | 1,404 |  |  |  | 2,565 |  |  |  | — |  |  |  | 5,073 |
Eliminations |  |  | 170 |  |  |  | 44 |  |  |  | 85 |  |  |  | (299 | ) |  |  | — |
|  | $ | 2,199 |  |  | $ | 2,241 |  |  | $ | 3,110 |  |  | $ | (299 | ) |  | $ | 7,251 |
Land |  | $ | 1,497 |  |  | $ | 1,342 |  |  | $ | 819 |  |  | $ | — |  |  | $ | 3,658 |
Offshore |  |  | 532 |  |  |  | 855 |  |  |  | 2,206 |  |  |  | — |  |  |  | 3,593 |
Eliminations |  |  | 170 |  |  |  | 44 |  |  |  | 85 |  |  |  | (299 | ) |  |  | — |
|  | $ | 2,199 |  |  | $ | 2,241 |  |  | $ | 3,110 |  |  | $ | (299 | ) |  | $ | 7,251 |
Summary of Changes in Carrying Amount of Contract Assets and Contract Liabilities | The changes in the carrying amount of contract assets and contract liabilities are as follows (in millions):
Contract Assets |  |  |
Balance at December 31, 2017 | $ | 495 |
Additions and Milestone Billings |  | (948 | )
Revenue Recognized |  | 1,094 |
Currency translation adjustments and other |  | (76 | )
Balance at December 31, 2018 | $ | 565 |
Contract Liabilities |  |  |
Balance at December 31, 2017 | $ | 519 |
Additions and Milestone Billings |  | 861 |
Revenue Recognized |  | (798 | )
Currency translation adjustments and other |  | (124 | )
Balance at December 31, 2018 | $ | 458 |

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