Fair Value Measurements - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Estimated Fair Value	$ 6,840	$ 8,874
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	24,878	21,859
Marketable securities	597	$ 1,068
Total cash, cash equivalents and current marketable securities, Carrying Amount	25,475
Total cash, cash equivalents and current marketable securities, Unrealized Gain	0
Total cash, cash equivalents and current marketable securities, Estimated Fair Value	25,475
Held-to-maturity Securities
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	18,635
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	18,635
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	18,635
Marketable securities	0
Held-to-maturity Securities | Cash
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	4,247
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	4,247
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	4,247
Marketable securities	0
Held-to-maturity Securities | U.S. Gov't securities
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	0
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	0
Marketable securities	0
Held-to-maturity Securities | Non-U.S. sovereign securities
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	150
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	150
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	150
Marketable securities	0
Held-to-maturity Securities | U.S. reverse repurchase agreements
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	8,496
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	8,496
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	8,496
Marketable securities	0
Held-to-maturity Securities | Corporate debt securities(1)
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	0
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	0
Marketable securities	0
Held-to-maturity Securities | Money market funds
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	4,883
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	4,883
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	4,883
Marketable securities	0
Held-to-maturity Securities | Time deposits(1)
Debt Securities, Held-to-maturity [Abstract]
Held-to-maturity Securities - Carrying Amount	859
Held-to-maturity Securities, Unrecognized Gain	0
Held-to-maturity Securities - Estimated Fair Value	859
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	859
Marketable securities	0
Available-for-sale Securities
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Carrying Amount	6,840
Available-for-sale Securities, Unrecognized Gain	0
Available-for-sale Securities - Estimated Fair Value	6,840
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	6,243
Marketable securities	597
Available-for-sale Securities | U.S. Gov’t securities
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Carrying Amount	6,585
Available-for-sale Securities - Estimated Fair Value	6,585
Available-for-sale Securities | U.S. Gov’t Agencies
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Carrying Amount	11
Available-for-sale Securities - Estimated Fair Value	11
Available-for-sale Securities | Non-U.S. sovereign securities
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Carrying Amount	2
Available-for-sale Securities - Estimated Fair Value	2
Available-for-sale Securities | Corporate debt securities(1)
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities - Carrying Amount	242
Available-for-sale Securities - Estimated Fair Value	242
Available-for-sale Securities | Non-U.S. sovereign securities
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Unrecognized Gain	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	0
Marketable securities	2
Available-for-sale Securities | Corporate debt securities(1)
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Unrecognized Gain	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	61
Marketable securities	181
Available-for-sale Securities | U.S. Gov’t securities
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Unrecognized Gain	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	6,182
Marketable securities	403
Available-for-sale Securities | U.S. Gov’t Agencies
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Unrecognized Gain	0
Debt Securities, Available-for-sale and Held-to-maturity [Abstract]
Cash and Cash Equivalents	0
Marketable securities	$ 11