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v3.22.2.2

Financing arrangements (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022 | Mar. 31, 2022
Debt Instrument [Line Items] |  |  |
Extinguishment of debt | $ 297 |  |
Gain (loss) on extinguishment of debt | 78 |  |
4.20% 2052 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Face amount |  |  | $ 1,000
Notes |  |  |
Debt Instrument [Line Items] |  |  |
Face amount | $ 3,000 | $ 3,000 | $ 4,000
Notes | 4.563% notes due 2048 (4.563% 2048 Notes) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.563% | 4.563% |
Effective interest rate | 6.30% | 6.30% |
Notes | 4.663% notes due 2051 (4.663% 2051 Notes) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.663% | 4.663% |
Effective interest rate | 5.60% | 5.60% |
Notes | Two Point Seven Seven Percent Notes Due Two Zero Five Three |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 2.77% | 2.77% |
Effective interest rate | 5.20% | 5.20% |
Notes | 3.00% 2029 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 3.00% | 3.00% | 3.00%
Face amount |  |  | $ 750
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event |  | 101.00% |
Notes | 3.35% 2032 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 3.35% | 3.35% | 3.35%
Face amount |  |  | $ 1,000
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event |  | 101.00% |
Notes | 4.20% 2052 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.20% | 4.20% | 4.20%
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event |  | 101.00% |
Notes | 4.40% 2062 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.40% | 4.40% | 4.40%
Face amount |  |  | $ 1,250
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event |  | 101.00% |
Notes | 4.05% 2029 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.05% | 4.05% |
Face amount | $ 1,250 | $ 1,250 |
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event | 101.00% |  |
Notes | 4.20% 2033 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.20% | 4.20% |
Face amount | $ 750 | $ 750 |
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event | 101.00% |  |
Notes | 4.875% 2053 Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 4.875% | 4.875% |
Face amount | $ 1,000 | $ 1,000 |
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event | 101.00% |  |
Notes | 2.20% notes due 2027 (2.20% 2027 Notes) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 2.20% | 2.20% |
Notes | 1.65% notes due 2028 (1.65% 2028 Notes) [Member} |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 1.65% | 1.65% |
Notes | 2.00% notes due 2032 (2.00% 2032 Notes) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 2.00% | 2.00% |
Notes | 2.80% notes due 2041 (2.80% 2041 Notes) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 2.80% | 2.80% |
Notes | 3.00% notes due 2052 (3.00% 2052 Notes) |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate, stated percentage | 3.00% | 3.00% |
Minimum | Debt Securities Payable |  |  |
Debt Instrument [Line Items] |  |  |
Redemption period without payment of make whole amount |  | 2 months |
Maximum | Debt Securities Payable |  |  |
Debt Instrument [Line Items] |  |  |
Redemption period without payment of make whole amount |  | 6 months |

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