CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income	$ 2,328us-gaap_ProfitLoss	$ 2,384us-gaap_ProfitLoss
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	(452)	(61)
Net changes related to available-for-sale securities:
Unrealized gains/(losses) arising during the period	32	0
Reclassification of (gains)/losses to net income	0	4
Total net changes related to available-for-sale securities	32	4
Unrealized gains/(losses) on cash flow hedges:
Unrealized gains/(losses) arising during the period	619	88
Reclassification of (gains)/losses to net income	(249)	(1)
Total unrealized gains/(losses) on cash flow hedges	370	87
Retirement-related benefit plans:
Prior service costs/(credits)	5	1
Net (losses)/gains arising during the period	(77)	32
Curtailments and settlements	4	4
Amortization of prior service (credits)/cost	(26)	(29)
Amortization of net (gains)/losses	835	649
Total retirement-related benefit plans	740	656
Other comprehensive income/(loss), before tax	690	687
Income tax (expense)/benefit related to items of other comprehensive income	(657)us-gaap_OtherComprehensiveIncomeLossTax	(241)us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive income/(loss)	33	446
Total comprehensive income/(loss)	$ 2,361	$ 2,830

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax of 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 before tax 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 before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments, of 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 before tax of gain (loss) adjustment to other comprehensive income (loss) resulting from settlement or curtailment of defined benefit pension and other postretirement defined benefit plans.

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Amount before tax, 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 after tax and reclassification adjustments of other comprehensive income (loss).

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

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Amount before tax of (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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Amount before tax 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 before tax 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) allocated to other comprehensive income (loss).

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

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