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Shareholders' Equity (Details 2) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance |  | $ (388) |  |  |  |
Other Comprehensive Income (Loss), Net of Tax |  | (23) | $ (54) |  | $ (65) |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance |  | (411) | (388) |  |  |
Defined Benefit Plan, Amortization of Gain (Loss) |  | (14) | (2) |  |  |
Pension settlement charges |  | (4) | (3) |  |  |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |  | 4 | 5 |  |  |
Tax (expense) benefit on reclassification of pension and post-retirement losses to net income |  | 2 |  |  |  |
Translation Adjustment and Gains (Losses) From Intra-Entity Transactions of a Long-Term Nature |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance |  | (221) | (245) |  |  |
Amounts classified into OCI, net of tax |  | 39 | 24 |  |  |
Amounts reclassified from accumulated OCI, net of tax |  | 0 | 0 |  |  |
Other Comprehensive Income (Loss), Net of Tax |  | 39 | 24 |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance |  | (182) | (221) |  | (245) |
Pension and Post-Retirement Benefit Plan Losses |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | [1] | (104) | (82) |  |  |
Amounts classified into OCI, net of tax |  | (6) | (30) | [1] |  |
Amounts reclassified from accumulated OCI, net of tax |  | 14 | 8 | [1] |  |
Other Comprehensive Income (Loss), Net of Tax |  | 8 | (22) | [1] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance |  | (96) | (104) | [1] | (82) | [1]
Net Unrealized Loss on Derivative Instruments |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance | [2] | (63) | (7) |  |  |
Amounts classified into OCI, net of tax |  | (75) | (35) | [2] |  |
Amounts reclassified from accumulated OCI, net of tax |  | 5 | (21) | [2] |  |
Other Comprehensive Income (Loss), Net of Tax |  | (70) | (56) | [2] |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance |  | (133) | (63) | [2] | (7) | [2]
Total |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance |  | (388) | (334) |  |  |
Amounts classified into OCI, net of tax |  | (42) | (41) |  |  |
Amounts reclassified from accumulated OCI, net of tax |  | 19 | (13) |  |  |
Other Comprehensive Income (Loss), Net of Tax |  | (23) | (54) |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance |  | $ (411) | $ (388) |  | $ (334) |
[1] | Amounts reclassified from AOCI for pension and post-retirement benefit plans losses during 2020 include amortization of net losses of $14 million, amortization of prior service cost of $4 million and related income tax benefit of $4 million. Amounts reclassified from AOCI for pension and post-retirement benefit plans losses during 2019 include amortization of net losses of $2 million, amortization of prior service cost of $5 million, settlement charges of $3 million and related income tax benefit of $2 million. See Note 15.
[2] | See Note 13 for details on amounts reclassified from AOCI.

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