Fair Value Measurements and Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets:
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets, Prepaid expenses and other
Total	$ 788	$ 1,089
Liabilities:
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities, Other liabilities
Business combination, contingent consideration, liability, current		52
Total	$ 7,999	6,653
Fixed income securities
Assets:
Debt securities, available-for-sale, current	16	25
Debt securities, available-for-sale, noncurrent	269	254
Interest rate swaps
Liabilities:
Derivative liability, current	1,964	823
Derivative liability, noncurrent	3,338	3,648
Cross currency swaps
Assets:
Derivative asset, current		4
Derivative asset, noncurrent	500	758
Liabilities:
Derivative liability, current	345	294
Derivative liability, noncurrent	2,344	1,791
Foreign exchange forwards
Assets:
Derivative asset, current		4
Liabilities:
Derivative liability, current	5	1
Interest rate caps
Assets:
Derivative asset, current	3	37
Derivative asset, noncurrent		7
Liabilities:
Derivative liability, current	3	37
Derivative liability, noncurrent		7
Level 1
Assets:
Total	0	0
Liabilities:
Business combination, contingent consideration, liability, current		0
Total	0	0
Level 1 | Fixed income securities
Assets:
Debt securities, available-for-sale, current	0	0
Debt securities, available-for-sale, noncurrent	0	0
Level 1 | Interest rate swaps
Liabilities:
Derivative liability, current	0	0
Derivative liability, noncurrent	0	0
Level 1 | Cross currency swaps
Assets:
Derivative asset, current		0
Derivative asset, noncurrent	0	0
Liabilities:
Derivative liability, current	0	0
Derivative liability, noncurrent	0	0
Level 1 | Foreign exchange forwards
Assets:
Derivative asset, current		0
Liabilities:
Derivative liability, current	0	0
Level 1 | Interest rate caps
Assets:
Derivative asset, current	0	0
Derivative asset, noncurrent		0
Liabilities:
Derivative liability, current	0	0
Derivative liability, noncurrent		0
Level 2
Assets:
Total	788	1,089
Liabilities:
Business combination, contingent consideration, liability, current		0
Total	7,999	6,601
Level 2 | Fixed income securities
Assets:
Debt securities, available-for-sale, current	16	25
Debt securities, available-for-sale, noncurrent	269	254
Level 2 | Interest rate swaps
Liabilities:
Derivative liability, current	1,964	823
Derivative liability, noncurrent	3,338	3,648
Level 2 | Cross currency swaps
Assets:
Derivative asset, current		4
Derivative asset, noncurrent	500	758
Liabilities:
Derivative liability, current	345	294
Derivative liability, noncurrent	2,344	1,791
Level 2 | Foreign exchange forwards
Assets:
Derivative asset, current		4
Liabilities:
Derivative liability, current	5	1
Level 2 | Interest rate caps
Assets:
Derivative asset, current	3	37
Derivative asset, noncurrent		7
Liabilities:
Derivative liability, current	3	37
Derivative liability, noncurrent		7
Level 3
Assets:
Total	0	0
Liabilities:
Business combination, contingent consideration, liability, current		52
Total	0	52
Level 3 | Fixed income securities
Assets:
Debt securities, available-for-sale, current	0	0
Debt securities, available-for-sale, noncurrent	0	0
Level 3 | Interest rate swaps
Liabilities:
Derivative liability, current	0	0
Derivative liability, noncurrent	0	0
Level 3 | Cross currency swaps
Assets:
Derivative asset, current		0
Derivative asset, noncurrent	0	0
Liabilities:
Derivative liability, current	0	0
Derivative liability, noncurrent	0	0
Level 3 | Foreign exchange forwards
Assets:
Derivative asset, current		0
Liabilities:
Derivative liability, current	0	0
Level 3 | Interest rate caps
Assets:
Derivative asset, current	0	0
Derivative asset, noncurrent		0
Liabilities:
Derivative liability, current	$ 0	0
Derivative liability, noncurrent		$ 0