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Long-term Corporate Debt and Borrowing Arrangements - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Nov. 30, 2023	Sep. 30, 2023	Jul. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Aug. 31, 2020	Jul. 31, 2019	Oct. 31, 2018	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Other	$ 30				$ 18
Deferred financing fees	(55)				(44)
Total	4,823				4,671
Less: Short-term debt and current portion of long-term debt	32				27
Long-term debt	$ 4,791				4,644
Senior Notes \| 4.125% euro-denominated Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	412.50%		4.125%									4.125%		4.125%
Long-term debt	$ 0				321
Senior Notes \| 4.500% euro-denominated Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	450.00%										4.50%		4.50%
Long-term debt	$ 0				268
Senior Notes \| 4.750% euro-denominated Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	475.00%									4.75%
Long-term debt	$ 386				375
Senior Notes \| 5.750% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	575.00%							5.75%	5.75%
Long-term debt	$ 736				732
Senior Notes \| 4.750% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	475.00%					4.75%	4.75%
Long-term debt	$ 500				500
Senior Notes \| 5.375% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	537.50%					5.375%	5.375%
Long-term debt	$ 600				600
Senior Notes \| 7.250% euro-denominated Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	725.00%			7.25%
Long-term debt	$ 441				0
Senior Notes \| 8.000% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	800.00%	8.00%
Long-term debt	$ 497				0
Loans Payable \| 8.000% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest percentage	8.00%
Loans Payable \| Floating Rate Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 1,164				1,176
Loans Payable \| Floating Rate Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 524				$ 725