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Derivative Instruments and Hedging Activities - Part 1 (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | $ 7,000,000 | $ 1,000,000 | $ (2,000,000) | $ 5,000,000 |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | 0 | 0 | 0 | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | 9,000,000 | 1,000,000 | 21,000,000 | 2,000,000 |
Derivative Liability, Fair Value, Gross Liability | (46,000,000) |  | (46,000,000) |  | $ (44,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | (16,000,000) | (2,000,000) | (13,000,000) | (6,000,000) |
Interest Rate Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 0 | 1,000,000 | (2,000,000) | 1,000,000 |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | 0 | 0 | 0 | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (10,000,000) | (2,000,000) | (10,000,000) | (4,000,000) |
Derivative Liability, Fair Value, Gross Liability | (793,000,000) |  | (793,000,000) |  | (328,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | 0 | 0 | 0 | 0 |
Interest Rate Contract [Member] | Libor and Euribor [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 5,852,000,000 |  | 5,852,000,000 |  |
Cross currency derivatives [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 0 | 0 | 0 | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | 5,000,000 | 0 | (14,000,000) |  |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | 0 | 0 | 0 |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (1,000,000) | 0 | (2,000,000) |  |
Derivative Liability, Fair Value, Gross Liability | (45,000,000) |  | (45,000,000) |  | (21,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | 0 | 0 | 0 |  |
Commodity Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 0 | (1,000,000) | (1,000,000) | (1,000,000) |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | 1,000,000 | 1,000,000 | 2,000,000 | (1,000,000) |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | 0 | 0 | 1,000,000 | 0 |
Derivative Liability, Fair Value, Gross Liability | (65,000,000) |  | (65,000,000) |  | (31,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | 0 | 1,000,000 | 1,000,000 | 0 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | 7,000,000 | 1,000,000 | (5,000,000) | 5,000,000 |
Fair Value Measurements With Unobservable Inputs Reconciliation Recurring Basis Regulatory Assets Liabilities | 1,000,000 | 1,000,000 | 2,000,000 | (1,000,000) |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | (2,000,000) | (1,000,000) | 10,000,000 | (2,000,000) |
Derivative Liability, Fair Value, Gross Liability | (949,000,000) |  | (949,000,000) |  | $ (424,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease) | (16,000,000) | (1,000,000) | (12,000,000) | (6,000,000) |
Natural Gas and Natural Gas Liquids [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Commodity Contract Asset, Current | 60,000,000 |  | 60,000,000 |  |
Energy [Domain] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Commodity Contract Asset, Current | 5,000,000 |  | 5,000,000 |  |
Coal [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Commodity Contract Asset, Current | 9,000,000 |  | 9,000,000 |  |
Unidad de Fomento (funds code) | Cross currency derivatives [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 229,000,000 |  | 229,000,000 |  |
Argentina, Pesos | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 73,000,000 |  | 73,000,000 |  |
Chile, Pesos | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 147,000,000 |  | 147,000,000 |  |
Colombia, Pesos | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 125,000,000 |  | 125,000,000 |  |
Mexico, Pesos | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 202,000,000 |  | 202,000,000 |  |
Euro Member Countries, Euro | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 91,000,000 |  | 91,000,000 |  |
Other unspecified currency [Domain] | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Derivatives, notional amount | 26,000,000 |  | 26,000,000 |  |
Other comprehensive income - Derivative activity [Member] | Foreign Exchange Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | (7,000,000) | 0 | 1,000,000 | 0 |
Other comprehensive income - Derivative activity [Member] | Interest Rate Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | (21,000,000) | (75,000,000) | (71,000,000) | (88,000,000) |
Other comprehensive income - Derivative activity [Member] | Cross currency derivatives [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) |  |  |  | 0 |
Other comprehensive income - Derivative activity [Member] | Commodity Contract [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | 0 | 0 | 0 | 0 |
Other comprehensive income - Derivative activity [Member] |  |  |  |  |
Derivative Tables [Line Items] |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) | $ (23,000,000) | $ (75,000,000) | $ (84,000,000) | $ (88,000,000) |

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