Consolidated Comprehensive Income (Parenthetical) (Parentheticals) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Foreign currency translation, tax (provision)/benefit	$ (78)	$ 57	$ 9
Current year actuarial gain (loss), tax (provision)/benefit	838	(1,232)	372
Amortization of actuarial (gain) loss, tax (provision)/benefit	(175)	(265)	(243)
Current year prior service credit (cost), tax (provision)/benefit	(2)	(2)	(12)
Amortization of prior service (credit) cost, tax (provision)/benefit	13	19	17
Amortization of transition (asset) obligation, tax (provision)/benefit	0	(1)	(1)
Derivative financial instruments, Gains (losses) deferred, tax (provision)/benefit	69	2	29
Derivative financial instruments, (Gains) losses reclassified to earnings, tax (provision)/benefit	(2)	(25)	(10)
Available-for-sale securities, Gains (losses) deferred, tax (provision)/benefit	(12)	(15)	(13)
Available-for-sale securities, (Gains) losses reclassified to earnings, tax (provision)/benefit	$ 11	$ 6	$ 1

Amount of tax expense (benefit) related to (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax (expense) benefit related to cost (credit) of benefit changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that has not been recognized in net periodic benefit cost (credit).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for net transition asset (obligation) related to pension and other postretirement benefit plans.

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Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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