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Financing arrangements (interest rate swaps textual interim only) (Details) - Notes [Member] $ in Millions | Sep. 30, 2021 USD ($)
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2.45% notes due 2030 (2.45% 2030 Notes) [Member] |
Debt Instrument [Line Items] |
Notional amounts | $ 1,000
Interest rate, stated percentage | 2.45%
2.45% notes due 2030 (2.45% 2030 Notes) [Member] | London Interbank Offered Rate (LIBOR) [Member] |
Debt Instrument [Line Items] |
Derivative, Basis Spread on Variable Rate | 1.00%
2.30% notes due 2031 (2.30% 2031 Notes) [Member] |
Debt Instrument [Line Items] |
Notional amounts | $ 500
Interest rate, stated percentage | 2.30%
2.30% notes due 2031 (2.30% 2031 Notes) [Member] | London Interbank Offered Rate (LIBOR) [Member] |
Debt Instrument [Line Items] |
Derivative, Basis Spread on Variable Rate | 0.80%

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