Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Nominal or face amount used to calculate payment on derivative.

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Financial instruments - Narrative (Details) € in Millions, ¥ in Millions, £ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2022 GBP (£)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 JPY (¥)
Currency Swap, Due November 2034
Debt Instrument [Line Items]
Notional amount of derivative						€ 69	¥ 2,149
Currency Swap, Due May 2038
Debt Instrument [Line Items]
Notional amount of derivative \| €						290
Forward exchange contracts
Debt Instrument [Line Items]
Net gains (loss) relating to forward exchange contracts \| $	$ 18	$ 4	$ 23	$ 24
Deal-contingent forward contracts
Debt Instrument [Line Items]
Net gains (loss) relating to forward exchange contracts \| $	$ (149)		$ (149)
Deal-contingent forward contracts \| Forecast
Debt Instrument [Line Items]
Notional amount of derivative \| £					£ 6,415
Senior Notes \| Senior Notes Due 2025
Debt Instrument [Line Items]
Aggregate principal amount (in EUR) \| €						€ 700