Valuation of Debt and Equity Investments and Certain Liabilities (Tables)

12 Months Ended

Dec. 31, 2023

Details of our investments are as follows:


	December 31, 2023						December 31, 2022
	Cash and Cash Equivalents		Short-Term Investments		Long-Term Investments		Cash and Cash Equivalents		Short-Term Investments		Long-Term Investments
Measured at fair value:
Money market funds	$	1,068	$	—	$	—	$	1,238	$	—	$	—
Corporate obligations	349		1,605		—		276		1,535		—
U.S. government and agency securities	696		3,808		—		680		4,234		—
Non-U.S. government and agency securities	50		198		—		149		248		—
Mutual funds	—		—		12		—		—		11
Total	2,163		5,611		12		2,343		6,017		11

Other measurement basis:
Equity-method investments	—		—		17		—		—		18
Nonmarketable investments	—		—		5		—		—		5
Total	—		—		22		—		—		23

Cash on hand	801		—		—		707		—		—
Total	$	2,964	$	5,611	$	34	$	3,050	$	6,017	$	34

Aggregate Maturities of Available-for-sale Debt Investments

The following table presents the aggregate maturities of our debt investments as of December 31, 2023:


	Fair Value
One year or less	$	6,362
One to two years	344

Assets and Liabilities Accounted for at Fair Value

The following are our assets and liabilities that were accounted for at fair value on a recurring basis. These tables do not include cash on hand, assets held by our postretirement plans, or assets and liabilities that are measured at historical cost or any basis other than fair value.


	December 31, 2023						December 31, 2022
	Level 1		Level 2		Total		Level 1		Level 2		Total
Assets:
Money market funds	$	1,068	$	—	$	1,068	$	1,238	$	—	$	1,238
Corporate obligations	—		1,954		1,954		—		1,811		1,811
U.S. government and agency securities	3,618		886		4,504		4,914		—		4,914
Non-U.S. government and agency securities	—		248		248		—		397		397
Mutual funds	12		—		12		11		—		11
Total assets	$	4,698	$	3,088	$	7,786	$	6,163	$	2,208	$	8,371

Liabilities:
Deferred compensation	$	393	$	—	$	393	$	326	$	—	$	326
Total liabilities	$	393	$	—	$	393	$	326	$	—	$	326