Investments (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-For-Sale Investments

The amortized cost, gross unrealized gains, gross unrealized losses and fair values of interest-bearing securities, which are considered available-for-sale, by type of security were as follows (in millions):

Types of securities as of December 31, 2023	Amortized cost		Gross unrealized gains		Gross unrealized losses		Fair values
U.S. Treasury bills	$	—	$	—	$	—	$	—
Money market mutual funds	10,266		—		—		10,266
Other short-term interest-bearing securities	138		—		—		138
Total available-for-sale investments	$	10,404	$	—	$	—	$	10,404

Types of securities as of December 31, 2022	Amortized cost		Gross unrealized gains		Gross unrealized losses		Fair values
U.S. Treasury bills	$	1,676	$	—	$	—	$	1,676
Money market mutual funds	2,659		—		—		2,659
Other short-term interest-bearing securities	—		—		—		—
Total available-for-sale investments	$	4,335	$	—	$	—	$	4,335

Schedule of Fair Values by Classification

The fair values of available-for-sale investments by location in the Consolidated Balance Sheets were as follows (in millions):

	December 31,
Consolidated Balance Sheets locations	2023		2022
Cash and cash equivalents	$	10,404	$	2,659
Marketable securities	—		1,676
Total available-for-sale investments	$	10,404	$	4,335