Equity (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 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				$ (172,000,000)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest				(226,000,000)	$ (225,000,000)
Stockholders' Equity Attributable to Parent		$ 3,309,000,000		3,309,000,000			$ 2,465,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				4,845,000,000	5,700,000,000
Net income		416,000,000	$ 150,000,000	1,193,000,000	248,000,000
Net Income (Loss) Attributable to Noncontrolling Interest		128,000,000	89,000,000	221,000,000	210,000,000
Total foreign currency translation adjustment, net of income tax		(124,000,000)	(24,000,000)	(115,000,000)	47,000,000
Total change in derivative fair value, net of income tax		(4,000,000)	(13,000,000)	63,000,000	2,000,000
Total pension adjustments, net of income tax		2,000,000	7,000,000	4,000,000	13,000,000
Cumulative effect of a change in accounting principle (2)	[1]	168,000,000	31,000,000	168,000,000	31,000,000
Temporary Equity, Other Changes	[2]			5,000,000	7,000,000
Contributions from noncontrolling interests				5,000,000	17,000,000
Distributions to noncontrolling interests				(185,000,000)	(198,000,000)
Disposition of businesses (4)	[3]			(249,000,000)	0
Issuance and exercise of stock-based compensation				6,000,000	9,000,000
Dividends declared on common stock				(86,000,000)	(79,000,000)
Sale of subsidiary shares to noncontrolling interests				6,000,000	18,000,000
Acquisition of subsidiary shares from noncontrolling interests				0	267,000,000
Temporary Equity, Net Income				7,000,000	6,000,000
Ending Balance		5,657,000,000	6,074,000,000	5,657,000,000	6,074,000,000
Additional Paid in Capital		8,402,000,000		8,402,000,000			8,501,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		(1,988,000,000)		(1,988,000,000)		$ (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				(173,000,000)
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				3,000,000
Accumulated Translation Adjustment [Member]
Changes In Equity Disclosure [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				(175,000,000)
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				4,000,000
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				2,465,000,000	2,794,000,000
Net income				974,000,000	29,000,000
Total foreign currency translation adjustment, net of income tax				(173,000,000)	48,000,000
Total change in derivative fair value, net of income tax				38,000,000	0
Total pension adjustments, net of income tax				4,000,000	0
Cumulative effect of a change in accounting principle (2)	[1]	87,000,000	31,000,000	87,000,000	31,000,000
Temporary Equity, Other Changes	[2]			5,000,000	7,000,000
Contributions from noncontrolling interests				0	0
Distributions to noncontrolling interests				0	0
Disposition of businesses (4)	[3]			0	0
Issuance and exercise of stock-based compensation				6,000,000	9,000,000
Dividends declared on common stock				(86,000,000)	(79,000,000)
Sale of subsidiary shares to noncontrolling interests				(1,000,000)	(4,000,000)
Acquisition of subsidiary shares from noncontrolling interests				0	200,000,000
Temporary Equity, Net Income				0	0
Ending Balance		3,309,000,000	3,021,000,000	3,309,000,000	3,021,000,000
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				2,380,000,000	2,906,000,000
Net income				219,000,000	219,000,000
Total foreign currency translation adjustment, net of income tax				58,000,000	(1,000,000)
Total change in derivative fair value, net of income tax				25,000,000	2,000,000
Total pension adjustments, net of income tax				0	13,000,000
Cumulative effect of a change in accounting principle (2)	[1]	81,000,000	0	81,000,000	0
Temporary Equity, Other Changes	[2]			0	0
Contributions from noncontrolling interests				5,000,000	17,000,000
Distributions to noncontrolling interests				(185,000,000)	(198,000,000)
Disposition of businesses (4)	[3]			(249,000,000)	0
Issuance and exercise of stock-based compensation				0	0
Dividends declared on common stock				0	0
Sale of subsidiary shares to noncontrolling interests				7,000,000	22,000,000
Acquisition of subsidiary shares from noncontrolling interests				0	67,000,000
Temporary Equity, Net Income				7,000,000	6,000,000
Ending Balance		$ 2,348,000,000	$ 3,053,000,000	$ 2,348,000,000	$ 3,053,000,000
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.