v3.26.3
Financial Instruments - Equity Investments with Readily Determinable Fair Values (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values $ 2,596   $ 2,596   $ 2,986
Affirm Holdings, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 1,405   1,405   1,511
Global-E Online Ltd.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 879   879   868
Klaviyo, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 292   292   $ 599
Transfers out of level 3 $ 5 $ 10 $ 22 $ 33  
Klaviyo, Inc. | Discount for Lack of Marketability          
Debt and Equity Securities, FV-NI [Line Items]          
Warrant, measurement input 0.08   0.08   0.11
Other          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values $ 20   $ 20   $ 8
Level 1          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 2,576   2,576   2,916
Level 1 | Affirm Holdings, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 1,405   1,405   1,511
Level 1 | Global-E Online Ltd.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 879   879   868
Level 1 | Klaviyo, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 272   272   529
Level 1 | Other          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 20   20   8
Level 3          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 20   20   70
Level 3 | Affirm Holdings, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 0   0   0
Level 3 | Global-E Online Ltd.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 0   0   0
Level 3 | Klaviyo, Inc.          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values 20   20   70
Level 3 | Other          
Debt and Equity Securities, FV-NI [Line Items]          
Equity investments with readily determinable fair values $ 0   $ 0   $ 0