v3.20.2

Accumulated Other Comprehensive Income​ (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Apr. 01, 2020
AOCI Attributable to Parent [Abstract] |  |  |  |  |
Balance at beginning of period | $ 1,389 | $ 3,117 | $ 2,973 | $ 2,969 |
Separation-related adjustments (A) | (8) |  | (324) |  |
Other comprehensive income: |  |  |  |  |
Foreign currency translation | 37 | 45 | 42 | 59 |
Total Other comprehensive income, net of tax | 80 | 46 | 139 | 60 |
Balance at end of period | 1,488 | 3,003 | 1,488 | 3,003 |
U.K. Defined Benefit Plan [Member] |  |  |  |  |
Other comprehensive income: |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement | 3 |  | 58 |  |
Pension and other postretirement benefits |  |  |  |  |
AOCI Attributable to Parent [Abstract] |  |  |  |  |
Balance at beginning of period | (1,784) | (32) | (43) | (32) |
Establishment of additional defined benefit plans |  |  |  |  | $ (1,752)
Separation-related adjustments (A) | 0 | 0 | 50 | 0 |
Other comprehensive income: |  |  |  |  |
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 4 | 1 | (34) | (1) |
Other Comprehensive Income (Loss) before Reclassifications, Tax | (1) | (1) | 8 | 0 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 3 | 0 | (26) | (1) |
Amortization of net actuarial loss and prior service cost | 36 | 1 | 153 | 3 |
Tax expense | (8) | 0 | (35) | (1) |
Total amount reclassified from Accumulated other comprehensive loss, net of tax | 28 | 1 | 118 | 2 |
Total Other comprehensive income, net of tax | 31 | 1 | 92 | 1 |
Balance at end of period | (1,753) | (31) | (1,753) | (31) |
Foreign currency translation |  |  |  |  |
AOCI Attributable to Parent [Abstract] |  |  |  |  |
Balance at beginning of period | (53) | 296 | 338 | 282 |
Separation-related adjustments (A) | 0 | 0 | 396 | 0 |
Other comprehensive income: |  |  |  |  |
Foreign currency translation | 37 | 45 | 20 | 59 |
Net amount reclassified to earnings from Accumulated other comprehensive income | 0 | 0 | 22 | 0 |
Total Other comprehensive income, net of tax | 37 | 45 | 42 | 59 |
Balance at end of period | (16) | 341 | (16) | 341 |
Cash flow hedges |  |  |  |  |
AOCI Attributable to Parent [Abstract] |  |  |  |  |
Balance at beginning of period | (11) | 0 | 0 | 0 |
Separation-related adjustments (A) | 0 | 0 | (4) | 0 |
Other comprehensive income: |  |  |  |  |
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 2 | 0 | 4 | 0 |
Other Comprehensive Income (Loss) before Reclassifications, Tax | (1) | 0 | (1) | 0 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 1 | 0 | 3 | 0 |
Amortization of net actuarial loss and prior service cost | 14 | 0 | 3 | 0 |
Tax expense | (3) | 0 | (1) | 0 |
Total amount reclassified from Accumulated other comprehensive loss, net of tax | 11 | 0 | 2 | 0 |
Total Other comprehensive income, net of tax | 12 | 0 | 5 | 0 |
Balance at end of period | 1 | 0 | 1 | 0 |
Accumulated other comprehensive income (loss) |  |  |  |  |
AOCI Attributable to Parent [Abstract] |  |  |  |  |
Balance at beginning of period | (1,848) | 264 | 295 | 250 |
Separation-related adjustments (A) |  |  | (450) |  |
Other comprehensive income: |  |  |  |  |
Total Other comprehensive income, net of tax | 80 | 46 | 139 | 60 |
Balance at end of period | $ (1,768) | $ 310 | $ (1,768) | $ 310 |

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