Financial Instruments - Contractual Maturities (Details) $ in Millions	Jun. 30, 2023 USD ($)
Amortized Cost
Due within one year	$ 42,208
Due after one year through five years	6,404
Due after five years through ten years	565
Due after ten years	1,268
Amortized cost	50,445
Estimated Fair Value
Due within one year	42,148
Due after one year through five years	5,983
Due after five years through ten years	534
Due after ten years	1,186
Estimated fair value	$ 49,851