Equity (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2017
Changes In Equity Disclosure [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				$ (222,000,000)
Stockholders' Equity Attributable to Parent		$ 3,305,000,000		3,305,000,000			$ 2,465,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				4,845,000,000	$ 5,700,000,000
Net income		191,000,000	$ 261,000,000	1,384,000,000	509,000,000
Net Income (Loss) Attributable to Noncontrolling Interest		90,000,000	88,000,000	311,000,000	298,000,000
Total foreign currency translation adjustment, net of income tax		(45,000,000)	80,000,000	(160,000,000)	127,000,000
Total change in derivative fair value, net of income tax		36,000,000	6,000,000	99,000,000	8,000,000
Total pension adjustments, net of income tax		1,000,000	7,000,000	5,000,000	20,000,000
Cumulative effect of a change in accounting principle (1)	[1]	168,000,000	31,000,000	168,000,000	31,000,000
Temporary Equity, Other Changes	[2]			(4,000,000)	(19,000,000)
Contributions from noncontrolling interests				6,000,000	17,000,000
Distributions to noncontrolling interests				(253,000,000)	(261,000,000)
Disposition of businesses (3)	[3]			(250,000,000)	0
Issuance and exercise of stock-based compensation				18,000,000	12,000,000
Dividends declared on common stock				(172,000,000)	(158,000,000)
Sale of subsidiary shares to noncontrolling interests				20,000,000	69,000,000
Acquisition of subsidiary shares from noncontrolling interests				0	115,000,000
Temporary Equity, Net Income				3,000,000	9,000,000
Ending Balance		5,709,000,000	6,179,000,000	5,709,000,000	6,179,000,000
Additional Paid in Capital		8,328,000,000		8,328,000,000			8,501,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		(2,020,000,000)		(2,020,000,000)		$ (1,857,000,000)	$ (1,876,000,000)
AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total foreign currency translation adjustment, net of income tax				(232,000,000)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Changes In Equity Disclosure [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				9,000,000
Accumulated Translation Adjustment [Member]
Changes In Equity Disclosure [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				(231,000,000)
Accumulated Defined Benefit Plans Adjustment [Member]
Changes In Equity Disclosure [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total pension adjustments, net of income tax				5,000,000
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				2,465,000,000	2,794,000,000
Net income				1,075,000,000	181,000,000
Total foreign currency translation adjustment, net of income tax				(232,000,000)	117,000,000
Total change in derivative fair value, net of income tax				64,000,000	5,000,000
Total pension adjustments, net of income tax				5,000,000	1,000,000
Cumulative effect of a change in accounting principle (1)	[1]	87,000,000	31,000,000	87,000,000	31,000,000
Temporary Equity, Other Changes	[2]			(4,000,000)	(19,000,000)
Contributions from noncontrolling interests				0	0
Distributions to noncontrolling interests				0	0
Disposition of businesses (3)	[3]			0	0
Issuance and exercise of stock-based compensation				18,000,000	12,000,000
Dividends declared on common stock				(172,000,000)	(158,000,000)
Sale of subsidiary shares to noncontrolling interests				(1,000,000)	22,000,000
Acquisition of subsidiary shares from noncontrolling interests				0	200,000,000
Temporary Equity, Net Income				0	0
Ending Balance		3,305,000,000	3,186,000,000	3,305,000,000	3,186,000,000
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				2,380,000,000	2,906,000,000
Net income				309,000,000	328,000,000
Total foreign currency translation adjustment, net of income tax				72,000,000	10,000,000
Total change in derivative fair value, net of income tax				35,000,000	3,000,000
Total pension adjustments, net of income tax				0	19,000,000
Cumulative effect of a change in accounting principle (1)	[1]	81,000,000	0	81,000,000	0
Temporary Equity, Other Changes	[2]			0	0
Contributions from noncontrolling interests				6,000,000	17,000,000
Distributions to noncontrolling interests				(253,000,000)	(261,000,000)
Disposition of businesses (3)	[3]			(250,000,000)	0
Issuance and exercise of stock-based compensation				0	0
Dividends declared on common stock				0	0
Sale of subsidiary shares to noncontrolling interests				21,000,000	47,000,000
Acquisition of subsidiary shares from noncontrolling interests				0	(85,000,000)
Temporary Equity, Net Income				3,000,000	9,000,000
Ending Balance		$ 2,404,000,000	$ 2,993,000,000	$ 2,404,000,000	$ 2,993,000,000
Alto Maipo [Member]
Changes In Equity Disclosure [Line Items]
Stockholders' Equity Attributable to Parent								$ 196,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Additional Paid in Capital								229,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax								$ (33,000,000)

[1] See Note 1—Financial Statement Presentation, New Accounting Standards Adopted for further information.

[2] Adjustment to record the redeemable stock of Colon at fair value.

[3] See Note 17—Held-for-Sale and Dispositions for further information.