Derivative Instruments and Hedging Activities - Part 1 (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (32,000,000)		$ (32,000,000)		$ (43,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	15,000,000	$ 0	(29,000,000)	$ (13,000,000)
Interest Rate Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(453,000,000)		(453,000,000)		(610,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	0	0	1,000,000	0
Interest Rate Contract [Member] | Libor and Euribor [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	5,313,000,000		5,313,000,000
Cross currency derivatives [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(13,000,000)		(13,000,000)		(4,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	4,000,000	0	4,000,000	0
Commodity Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(63,000,000)		(63,000,000)		(22,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	(1,000,000)	1,000,000	(1,000,000)	2,000,000
Derivative Liability, Fair Value, Gross Liability	(561,000,000)		(561,000,000)		$ (679,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	18,000,000	$ 1,000,000	(25,000,000)	$ (11,000,000)
Natural Gas and Natural Gas Liquids [Member]
Derivative Tables [Line Items]
Commodity Contract Asset, Current	88,000,000		88,000,000
Energy [Domain]
Derivative Tables [Line Items]
Commodity Contract Asset, Current	23,000,000		23,000,000
Coal [Member]
Derivative Tables [Line Items]
Commodity Contract Asset, Current	8,000,000		8,000,000
Unidad de Fomento (funds code) | Cross currency derivatives [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	254,000,000		254,000,000
Argentina, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	13,000,000		13,000,000
Chile, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	196,000,000		196,000,000
Colombia, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	145,000,000		145,000,000
Mexico, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	101,000,000		101,000,000
Euro Member Countries, Euro | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	127,000,000		127,000,000
Other unspecified currency [Domain] | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	$ 3,000,000		$ 3,000,000