Consolidated Statements of Change in Equity, Accumulated Other Comprehensive Loss and Redeemable Non-Controlling Interest (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Total equity	$ 16,840	$ 16,985
Foreign currency translation adjustments
Total equity	(178)	(136)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Total equity	2	2
Employee benefit plans adjustments
Total equity	89	89
Accumulated other comprehensive loss
Total equity	$ (265)	$ (223)

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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