Fair Value Measurements (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets:
Derivative instruments	$ 591	$ 257
Liabilities:
Derivative instruments	72	101
Fair Value, Recurring
Assets:
Loan receivable	280	0
Derivative instruments	591	257
Total	3,914	1,861
Liabilities:
Derivative instruments	72	101
Mortgage and loans payable	654	684
Senior notes	13,342	11,740
Total	14,068	12,525
Fair Value, Recurring | Money market funds
Assets:
Cash and cash equivalents	2,401	1,364
Fair Value, Recurring | Time deposits
Assets:
Cash and cash equivalents	642	240
Fair Value, Recurring | Level 1
Assets:
Loan receivable	0	0
Derivative instruments	0	0
Total	2,516	1,604
Liabilities:
Derivative instruments	0	0
Mortgage and loans payable	0	0
Senior notes	12,851	11,166
Total	12,851	11,166
Fair Value, Recurring | Level 1 | Money market funds
Assets:
Cash and cash equivalents	2,401	1,364
Fair Value, Recurring | Level 1 | Time deposits
Assets:
Cash and cash equivalents	115	240
Fair Value, Recurring | Level 2
Assets:
Loan receivable	0	0
Derivative instruments	591	257
Total	1,118	257
Liabilities:
Derivative instruments	72	101
Mortgage and loans payable	654	684
Senior notes	491	574
Total	1,217	1,359
Fair Value, Recurring | Level 2 | Money market funds
Assets:
Cash and cash equivalents	0	0
Fair Value, Recurring | Level 2 | Time deposits
Assets:
Cash and cash equivalents	527	0
Fair Value, Recurring | Level 3
Assets:
Loan receivable	280	0
Derivative instruments	0	0
Total	280	0
Liabilities:
Derivative instruments	0	0
Mortgage and loans payable	0	0
Senior notes	0	0
Total	0	0
Fair Value, Recurring | Level 3 | Money market funds
Assets:
Cash and cash equivalents	0	0
Fair Value, Recurring | Level 3 | Time deposits
Assets:
Cash and cash equivalents	$ 0	$ 0