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Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Changes in Other Comprehensive income
Balances as of start of period			$ (1,919)
Pension and other postretirement benefit gains	$ (6)	$ (14)	(29)	$ (41)
Balances as of end of period	(2,154)		(2,154)
Accumulated Other Comprehensive (Loss) Income [Member]
Changes in Other Comprehensive income
Balances as of start of period	(2,151)	(1,394)	(1,919)	(1,426)
Net unrealized gains (losses)	(20)	32	(20)	100
Increase (decrease) due to amounts reclassified into earnings	1	26	1	54
Net translation gain (losses) of investments in foreign operations	45	119	(405)	101
Net (losses) gains related to hedges of investment in foreign operations	(33)	(116)	162	(133)
Pension and other postretirement benefit gains	6	14	29	41
Net change in accumulated other comprehensive income (loss)	(3)	23	(235)	55
Balances as of end of period	(2,154)	(1,371)	(2,154)	(1,371)
Net Unrealized Investment Gains (Losses) on Investment Securities [Member]
Changes in Other Comprehensive income
Balances as of start of period	96	102	96	63
Net unrealized gains (losses)	(20)	32	(20)	100
Increase (decrease) due to amounts reclassified into earnings	0	29	0	58
Net translation gain (losses) of investments in foreign operations	0	0	0	0
Net (losses) gains related to hedges of investment in foreign operations	0	0	0	0
Pension and other postretirement benefit gains	0	0	0	0
Net change in accumulated other comprehensive income (loss)	(20)	3	(20)	42
Balances as of end of period	76	105	76	105
Foreign Currency Translation Adjustments [Member]
Changes in Other Comprehensive income
Balances as of start of period	(1,754)	(1,124)	(1,499)	(1,090)
Net unrealized gains (losses)	0	0	0	0
Increase (decrease) due to amounts reclassified into earnings	1	3	1	4
Net translation gain (losses) of investments in foreign operations	45	119	(405)	101
Net (losses) gains related to hedges of investment in foreign operations	(33)	(116)	162	(133)
Pension and other postretirement benefit gains	0	0	0	0
Net change in accumulated other comprehensive income (loss)	11	6	(244)	(28)
Balances as of end of period	(1,743)	(1,118)	(1,743)	(1,118)
Net Unrealized Pension and Other Postretirement Benefit Losses [Member]
Changes in Other Comprehensive income
Balances as of start of period	(493)	(372)	(516)	(399)
Net unrealized gains (losses)	0	0	0	0
Increase (decrease) due to amounts reclassified into earnings	0	0	0	0
Net translation gain (losses) of investments in foreign operations	0	0	0	0
Net (losses) gains related to hedges of investment in foreign operations	0	0	0	0
Pension and other postretirement benefit gains	6	14	29	41
Net change in accumulated other comprehensive income (loss)	6	14	29	41
Balances as of end of period	$ (487)	$ (358)	$ (487)	$ (358)

X

- Definition

Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity, net of tax.

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This item represents the gains and losses, net of tax, associated with the Company's hedges of investment in foreign operations that has been included in a separate component of shareholders' equity during the period.

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The total net unrealized holding gain/loss that has been included as a separate component of other comprehensive income (loss) during the period.

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The total realized gain/ loss that has been included as a separate component of shareholders' equity during the period.

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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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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.

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