v3.26.1
Fair Value Measurements (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
U.S. government securities - held to maturity $ 5 $ 256
U.S. government securities - available for sale 5 0
Loan receivable 344 351
Derivative instruments 115 255
Total 2,353 3,466
Liabilities:    
Derivative instruments 140 229
Mortgage and loans payable 20 706
Senior notes 18,689 17,297
Total 18,849 18,232
Money market funds    
Assets:    
Cash and cash equivalents 617 1,333
Time deposits    
Assets:    
Cash and cash equivalents 1,267 1,271
Level 1    
Assets:    
U.S. government securities - held to maturity 0 0
U.S. government securities - available for sale 5 0
Loan receivable 0 0
Derivative instruments 0 0
Total 622 1,333
Liabilities:    
Derivative instruments 0 0
Mortgage and loans payable 0 0
Senior notes 18,286 16,847
Total 18,286 16,847
Level 1 | Money market funds    
Assets:    
Cash and cash equivalents 617 1,333
Level 1 | Time deposits    
Assets:    
Cash and cash equivalents 0 0
Level 2    
Assets:    
U.S. government securities - held to maturity 5 256
U.S. government securities - available for sale 0 0
Loan receivable 0 0
Derivative instruments 115 255
Total 1,387 1,782
Liabilities:    
Derivative instruments 140 229
Mortgage and loans payable 20 706
Senior notes 403 450
Total 563 1,385
Level 2 | Money market funds    
Assets:    
Cash and cash equivalents 0 0
Level 2 | Time deposits    
Assets:    
Cash and cash equivalents 1,267 1,271
Level 3    
Assets:    
U.S. government securities - held to maturity 0 0
U.S. government securities - available for sale 0 0
Loan receivable 344 351
Derivative instruments 0 0
Total 344 351
Liabilities:    
Derivative instruments 0 0
Mortgage and loans payable 0 0
Senior notes 0 0
Total 0 0
Level 3 | Money market funds    
Assets:    
Cash and cash equivalents 0 0
Level 3 | Time deposits    
Assets:    
Cash and cash equivalents $ 0 $ 0