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Debt - Narrative (Details)		1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 02, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($) Agreement	Jun. 30, 2024 USD ($)	Sep. 30, 2024 GBP (£)	Aug. 19, 2024 USD ($)	Jun. 14, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Number of new agreements | Agreement			2
Outstanding borrowing		$ 13,477,573,000	$ 13,477,573,000					$ 12,034,622,000
Term Loan Facility
Debt Instrument [Line Items]
Payment of debt costs	$ 4,300,000
Credit Agreement
Debt Instrument [Line Items]
Letters of credit outstanding		79,530,000	79,530,000
Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding borrowing		1,005,000,000	1,005,000,000
Letters of credit outstanding		7,980,000	7,980,000
Term Loan B due 2031 | Term Loan Facility
Debt Instrument [Line Items]
Maximum borrowing amount	$ 1,806,700,000			$ 1,194,000,000		$ 1,860,000,000
Contractual interest rate	2.00%			2.25%
Periodic payment		4,700,000
Outstanding borrowing		1,849,096,000	1,849,096,000					1,191,000,000
Term Loan B due 2026 | Term Loan Facility
Debt Instrument [Line Items]
Maximum borrowing amount	$ 53,400,000			$ 656,300,000
Outstanding borrowing		0	0					659,298,000
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Maximum borrowing amount		400,000,000	400,000,000				$ 360,000,000
Line of credit facility, accordion feature, increase limit							$ 450,000,000
Outstanding borrowing		$ 386,500,000	$ 386,500,000					$ 358,500,000
Average interest rate (as a percent)		5.90%	5.90%		5.90%
UK Bilateral Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing amount | £					£ 140,000,000
Line of credit facility, accordion feature, increase limit | £					£ 125,000,000
Stated interest rate (as a percent)		7.00%	7.00%		7.00%

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