Equity (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Beginning Balance		$ (1,486)	$ (2,147)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Beginning Balance		(333)	(323)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Beginning Balance		(57)	(286)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance		(1,876)	(2,756)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(278)	(15)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		64	928
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(182)	634	$ 1,181
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax		(26)	(38)	(42)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		5	247	(187)
Other Comprehensive Income (Loss), Net of Tax		(151)	919	1,036
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance		(1,721)	(1,486)	(2,147)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Ending Balance		(300)	(333)	(323)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Ending Balance		(50)	(57)	(286)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		(2,071)	(1,876)	(2,756)
Available-for-Sale securities, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(214)	18
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(21)	643
Derivative gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(64)	(14)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		78	37
Unfunded pension obligations, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Beginning Balance		0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		0	(19)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		7	248
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Ending Balance			0
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(235)	661	1,109
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax		(14)	(23)	(30)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		7	229	(12)
Other Comprehensive Income (Loss), Net of Tax		(214)	913	$ 1,127
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]	19
Alto Maipo [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Beginning Balance		0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Beginning Balance		(33)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance		(33)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance			0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Ending Balance			(33)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance			$ (33)
ASC 606 Impact [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		19
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		17
ASC 606 Impact [Member] | Available-for-Sale securities, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		0
ASC 606 Impact [Member] | Derivative gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		$ 19

[1] See Note 1—General and Summary of Significant Accounting Policies for further information.