Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Adjusted Cost	$ 36,549	$ 29,098
Gross Unrealized Gains	15	3
Gross Unrealized Losses	(1)	(7)
Fair Value	36,563	29,094
Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	16,139	16,398
Short-Term Investments
Marketable Securities [Line Items]
Fair Value	20,424	12,696
Cash
Marketable Securities [Line Items]
Adjusted Cost	14,386	15,903
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	14,386	15,903
Cash \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	14,386	15,903
Cash \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
Certificates of deposit and time deposits
Marketable Securities [Line Items]
Adjusted Cost	12,767	6,995
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	12,767	6,996
Certificates of deposit and time deposits \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	0
Certificates of deposit and time deposits \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	12,767	6,996
Commercial paper
Marketable Securities [Line Items]
Adjusted Cost	3,908	470
Gross Unrealized Gains	11	0
Gross Unrealized Losses	0	0
Fair Value	3,919	470
Commercial paper \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	109
Commercial paper \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	3,919	361
U.S. government securities
Marketable Securities [Line Items]
Adjusted Cost	3,618	5,136
Gross Unrealized Gains	3	1
Gross Unrealized Losses	(1)	(1)
Fair Value	3,620	5,136
U.S. government securities \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	277
U.S. government securities \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	3,620	4,859
Corporate debt securities
Marketable Securities [Line Items]
Adjusted Cost	117	485
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	(6)
Fair Value	118	480
Corporate debt securities \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	0
Corporate debt securities \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	118	480
Money market funds
Marketable Securities [Line Items]
Adjusted Cost	1,753	109
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,753	109
Money market funds \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	1,753	109
Money market funds \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	$ 0	$ 0

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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