Equity (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Mar. 31, 2016
Changes In Equity Disclosure [Line Items]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest				$ 225,000,000	$ 48,000,000
Stockholders' Equity Attributable to Parent		$ 3,021,000,000		3,021,000,000		$ 2,794,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 5,673,000,000	5,700,000,000	6,171,000,000
Net income (loss)		150,000,000	(387,000,000)	248,000,000	(313,000,000)
Net Income (Loss) Attributable to Noncontrolling Interest		97,000,000	95,000,000	219,000,000	43,000,000
Total foreign currency translation adjustment, net of income tax		(24,000,000)	120,000,000	47,000,000	248,000,000
Total change in derivative fair value, net of income tax		(13,000,000)	(90,000,000)	2,000,000	(155,000,000)
Total pension adjustments, net of income tax		7,000,000	4,000,000	13,000,000	7,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]	31,000,000		31,000,000			$ 0
Preferred Stock, Accretion of Redemption, Discount				(7,000,000)	0
Contributions from noncontrolling interests				17,000,000	7,000,000
Distributions to noncontrolling interests				(198,000,000)	(189,000,000)
Disposition of businesses				0	18,000,000
Purchase of treasury stock				0	(79,000,000)
Issuance and exercise of stock-based compensation benefit plans				9,000,000	12,000,000
Dividends declared on common stock				(79,000,000)	(71,000,000)
Sale of subsidiary shares to noncontrolling interests				18,000,000	17,000,000
Acquisition of subsidiary shares from noncontrolling interests				267,000,000	(5,000,000)
Temporary Equity, Net Income				6,000,000	5,000,000
Ending Balance		6,074,000,000		6,074,000,000
Additional Paid in Capital		8,732,000,000		8,732,000,000		8,592,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		(2,741,000,000)		(2,741,000,000)		$ (2,756,000,000)
AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total foreign currency translation adjustment, net of income tax				48,000,000
Accumulated Defined Benefit Plans Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total pension adjustments, net of income tax				0
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			2,766,000,000	2,794,000,000	3,149,000,000
Net income (loss)				29,000,000	(356,000,000)
Total foreign currency translation adjustment, net of income tax				48,000,000	193,000,000
Total change in derivative fair value, net of income tax				0	(80,000,000)
Total pension adjustments, net of income tax				0	2,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]	31,000,000		31,000,000			0
Preferred Stock, Accretion of Redemption, Discount				(7,000,000)	0
Contributions from noncontrolling interests				0	0
Distributions to noncontrolling interests				0	(2,000,000)
Disposition of businesses				0	0
Purchase of treasury stock				0	(79,000,000)
Issuance and exercise of stock-based compensation benefit plans				9,000,000	12,000,000
Dividends declared on common stock				(79,000,000)	(71,000,000)
Sale of subsidiary shares to noncontrolling interests				(4,000,000)	0
Acquisition of subsidiary shares from noncontrolling interests				200,000,000	(2,000,000)
Temporary Equity, Net Income				0	0
Ending Balance		3,021,000,000		3,021,000,000
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 2,907,000,000	2,906,000,000	3,022,000,000
Net income (loss)	[2]			219,000,000	43,000,000
Total foreign currency translation adjustment, net of income tax				(1,000,000)	55,000,000
Total change in derivative fair value, net of income tax				2,000,000	(75,000,000)
Total pension adjustments, net of income tax				13,000,000	5,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]	0		0			$ 0
Preferred Stock, Accretion of Redemption, Discount				0	0
Contributions from noncontrolling interests				17,000,000	7,000,000
Distributions to noncontrolling interests				(198,000,000)	(187,000,000)
Disposition of businesses				0	18,000,000
Purchase of treasury stock				0	0
Issuance and exercise of stock-based compensation benefit plans				0	0
Dividends declared on common stock				0	0
Sale of subsidiary shares to noncontrolling interests				22,000,000	17,000,000
Acquisition of subsidiary shares from noncontrolling interests				67,000,000	(3,000,000)
Temporary Equity, Net Income				6,000,000	$ 5,000,000
Ending Balance		3,053,000,000		3,053,000,000
Alto Maipo [Member]
Changes In Equity Disclosure [Line Items]
Stockholders' Equity Attributable to Parent		196,000,000		196,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Additional Paid in Capital		229,000,000		229,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (33,000,000)		$ (33,000,000)

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

[2] (1) Net income attributable to noncontrolling interest of $225 million and net loss attributable to redeemable stocks of subsidiaries of $6 million for the six months ended June 30, 2017. Net income attributable to noncontrolling interest of $48 million and net loss attributable to redeemable stock of subsidiaries of $5 million for the six months ended June 30, 2016.