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Segments - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) Segment | Jun. 30, 2020 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | Segment |  |  | 3 |
Operating Income (Loss) | $ 582 | $ 173 | $ 1,015 | $ 364
Europe [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income (Loss) | 343 | $ 244 | $ 680 | $ 746
Europe [Member] | Sales Revenue, Net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income (Loss) | $ 1 |  |  |

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