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Face (par) amount of debt instrument at time of issuance.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Debt - Long-term Debt (Details) € in Millions	Sep. 30, 2022 USD ($)	Sep. 30, 2022 EUR (€)	Nov. 24, 2021 EUR (€)	Sep. 30, 2021 USD ($)	Aug. 16, 2021 EUR (€)	Jan. 20, 2021	Nov. 02, 2020 USD ($)	Sep. 30, 2020	Aug. 12, 2020
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 3,773,000,000			$ 3,383,000,000
Issuance premium less unamortized discount and unamortized deferred financing costs	(41,000,000)			(37,000,000)
Total long-term debt, including the current portion, net	$ 3,732,000,000			$ 3,346,000,000
3.750% Senior Secured Notes
Debt Instrument [Line Items]
Interest rate	3.75%	3.75%		3.75%				3.75%
2.250% Senior Secured Notes
Debt Instrument [Line Items]
Interest rate	2.25%	2.25%		2.25%				2.25%
3.000% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Interest rate	3.00%	3.00%		3.00%				3.00%
Acquisition Corp. \| Senior Term Loan Facility due 2028
Debt Instrument [Line Items]
Total long-term debt, including the current portion	$ 1,145,000,000			$ 1,145,000,000
Acquisition Corp. \| 2.750% Senior Secured Notes due 2028
Debt Instrument [Line Items]
Interest rate	2.75%	2.75%				2.75%
Face or principal amount of debt instrument \| €		€ 325
Total long-term debt, including the current portion	$ 318,000,000			381,000,000
Acquisition Corp. \| 3.750% Senior Secured Notes
Debt Instrument [Line Items]
Interest rate	3.75%	3.75%	3.75%
Face or principal amount of debt instrument \| €			€ 540
Total long-term debt, including the current portion	$ 540,000,000			0
Acquisition Corp. \| 3.875% Senior Secured Notes due 2030
Debt Instrument [Line Items]
Interest rate	3.875%	3.875%				3.875%
Total long-term debt, including the current portion	$ 535,000,000			535,000,000
Acquisition Corp. \| 2.250% Senior Secured Notes
Debt Instrument [Line Items]
Interest rate	2.25%	2.25%			2.25%	2.25%
Face or principal amount of debt instrument \| €		€ 445			€ 445
Total long-term debt, including the current portion	$ 435,000,000			522,000,000
Acquisition Corp. \| 3.000% Senior Secured Notes due 2031
Debt Instrument [Line Items]
Interest rate	3.00%	3.00%				3.00%	3.00%		3.00%
Face or principal amount of debt instrument							$ 250,000,000
Total long-term debt, including the current portion	$ 800,000,000			800,000,000
Acquisition Corp. \| Revolving Credit Facility
Debt Instrument [Line Items]
Total long-term debt, including the current portion	0			0
Line of credit facility, current borrowing capacity	300,000,000			300,000,000
Letters of credit outstanding	4,000,000			7,000,000
Revolving credit facility outstanding	$ 0			$ 0