Derivative Instruments and Hedging Activities - Part 1 (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (28,000,000)		$ (28,000,000)		$ (43,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	(4,000,000)	$ (16,000,000)	(44,000,000)	$ (13,000,000)
Interest Rate Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(473,000,000)		(473,000,000)		(610,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	(1,000,000)	0	1,000,000	0
Interest Rate Contract [Member] | Libor and Euribor [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	5,372,000,000		5,372,000,000
Cross currency derivatives [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(34,000,000)		(34,000,000)		(4,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	0	0	0	0
Commodity Contract [Member]
Derivative Tables [Line Items]
Derivative Liability, Fair Value, Gross Liability	(103,000,000)		(103,000,000)		(22,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	0	0	0	1,000,000
Derivative Liability, Fair Value, Gross Liability	(638,000,000)		(638,000,000)		$ (679,000,000)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	(5,000,000)	$ (16,000,000)	(43,000,000)	$ (12,000,000)
Natural Gas and Natural Gas Liquids [Member]
Derivative Tables [Line Items]
Commodity Contract Asset, Current	104,000,000		104,000,000
Energy [Domain]
Derivative Tables [Line Items]
Commodity Contract Asset, Current	27,000,000		27,000,000
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	376,000,000		376,000,000
Argentina, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	14,000,000		14,000,000
Chile, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	159,000,000		159,000,000
Colombia, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	165,000,000		165,000,000
Mexico, Pesos | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	132,000,000		132,000,000
Euro Member Countries, Euro | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	132,000,000		132,000,000
Other unspecified currency [Domain] | Foreign Exchange Contract [Member]
Derivative Tables [Line Items]
Derivatives, notional amount	$ 1,000,000		$ 1,000,000