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Restructuring (Narrative) (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($) Employee | Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 44 | $ 21
2020 Optimization [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 26 |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee | 585 |
Restructuring and Related Cost, Number of Positions Eliminated | Employee | 450 |
Restructuring and Related Cost, Expected Cost Remaining | $ 15 |
Brazil Restructuring [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 1 |
Restructuring and Related Cost, Number of Positions Eliminated | Employee | 20 |
Restructuring and Related Cost, Expected Cost Remaining | $ 7 |

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