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Financing arrangements - Interest Rate and Cross-Currency Swaps (Details) - Notes payable - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Notional amount | $ 6,650 | $ 6,650
3.625% notes due 2024 (3.625% 2024 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 3.625% |
Notional amount | $ 1,400 | $ 1,400
3.625% notes due 2024 (3.625% 2024 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 3.40% | 3.40%
3.125% notes due 2025 (3.125% 2025 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 3.125% |
Notional amount | $ 1,000 | $ 1,000
3.125% notes due 2025 (3.125% 2025 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 2.10% | 2.10%
2.60% notes due 2026 (2.60% 2026 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.60% |
Notional amount | $ 1,250 | $ 1,250
2.60% notes due 2026 (2.60% 2026 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 2.10% | 2.10%
2.45% notes due 2030 (2.45% 2030 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.45% |
Notional amount | $ 1,000 | $ 1,000
2.45% notes due 2030 (2.45% 2030 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 1.30% | 1.30%
2.30% notes due 2031 (2.30% 2031 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.30% |
Notional amount | $ 500 | $ 500
2.30% notes due 2031 (2.30% 2031 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 1.10% | 1.10%
4.663% notes due 2051 (4.663% 2051 Notes) |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 4.663% |
Notional amount | $ 1,500 | $ 1,500
4.663% notes due 2051 (4.663% 2051 Notes) | Secured Overnight Financing Rate (SOFR) |  |
Debt Instrument [Line Items] |  |
Derivative, effective interest rate | 4.30% | 4.30%

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