CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 6,657	$ 9,401
Other comprehensive income:
Change in foreign currency translation adjustment	(36)	657
Available-for-sale investments:
Change in net unrealized gains (losses)	719	(208)
Less: reclassification adjustment for net (gains) losses included in net income	7	39
Net change (net of tax effect of $0 and $88)	726	(169)
Cash flow hedges:
Change in net unrealized gains (losses)	(30)	(262)
Less: reclassification adjustment for net (gains) losses included in net income	(104)	194
Net change (net of tax effect of $12 and $1)	(134)	(68)
Other comprehensive income	556	420
Comprehensive income	$ 7,213	$ 9,821

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

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