Changes In Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Changes in other comprehensive income
Balances as of start of period	$ (1,103)	$ (912)	$ (1,156)	$ (787)
Net translation loss of investment in foreign operations	(136)	(51)	(33)	(239)
Net gains related to hedges of investment in foreign operations	51	22	1	85
Net change in accumulated other comprehensive loss	(85)	(29)	(32)	(154)
Balances as of end of period	$ (1,188)	$ (941)	$ (1,188)	$ (941)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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