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v3.19.3.a.u2

Stockholders' equity (Reclassifications out of AOCI) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 23,362 | $ 23,747 | $ 22,849
Interest and other income, net |  |  |  |  |  |  |  |  | 753 | 674 | 928
Interest expense, net |  |  |  |  |  |  |  |  | (1,289) | (1,392) | (1,304)
Income before income taxes |  |  |  |  |  |  |  |  | 9,138 | 9,545 | 9,597
Provision for income taxes |  |  |  |  |  |  |  |  | (1,296) | (1,151) | (7,618)
Net income | $ 1,703 | $ 1,968 | $ 2,179 | $ 1,992 | $ 1,928 | $ 1,859 | $ 2,296 | $ 2,311 | 7,842 | 8,394 | 1,979
Product sales [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 5,881 | $ 5,463 | $ 5,574 | $ 5,286 | $ 6,001 | $ 5,510 | $ 5,679 | $ 5,343 | 22,204 | 22,533 | 21,795
Reclassification out of AOCI [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | 211 | (262) | 638
Provision for income taxes |  |  |  |  |  |  |  |  | (46) | 55 | (226)
Net income |  |  |  |  |  |  |  |  | 165 | (207) | 412
Reclassification out of AOCI [Member] | Available-for-sale securities [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest and other income, net |  |  |  |  |  |  |  |  | 56 | (365) | (41)
Provision for income taxes |  |  |  |  |  |  |  |  | (14) | 3 | (8)
Net income |  |  |  |  |  |  |  |  | 42 | (362) | (49)
Reclassification out of AOCI [Member] | Foreign currency contract [Member] | Product sales [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 101 | (21) | 65
Reclassification out of AOCI [Member] | Foreign currency contract [Member] | Cash flow hedge [Member] | Product sales [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 101 | (21) | 65
Reclassification out of AOCI [Member] | Cross-currency swap contract [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest and other income, net |  |  |  |  |  |  |  |  | 110 | (241) | 574
Reclassification out of AOCI [Member] | Cross-currency swap contract [Member] | Cash flow hedge [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest and other income, net |  |  |  |  |  |  |  |  | 110 | (241) | 574
Reclassification out of AOCI [Member] | Forward interest rate contract [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  | (1)
Reclassification out of AOCI [Member] | Forward interest rate contract [Member] | Cash flow hedge [Member] | Cash flow hedges [Member] |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ (1)

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