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v3.10.0.1

Revenues (Changes) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2018 USD ($)
Significant changes to contract liabilities |
Total contract liabilities, at beginning of period | $ 625
Decrease due to recognition of revenues for goods and services | (192)
Increase due to goods and services transferred over time | 65
Total contract liabilities, at end of period | $ 498

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