Valuation of debt and equity investments and certain liabilities (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Investments

Details of our investments are as follows:

	September 30, 2021						December 31, 2020
	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	$	2,132	$	—	$	—	$	886	$	—	$	—
Corporate obligations	1,136		1,109		—		256		257		—
U.S. government and agency securities	1,140		2,587		—		1,340		3,054		—
Non-U.S. government and agency securities	385		423		—		—		150		—
Mutual funds	—		—		15		—		—		18
Total	4,793		4,119		15		2,482		3,461		18
Other measurement basis:
Equity-method investments	—		—		54		—		—		27
Non-marketable equity investments	—		—		4		—		—		4
Cash on hand	870		—		—		625		—		—
Total	$	5,663	$	4,119	$	73	$	3,107	$	3,461	$	49

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.

	September 30, 2021						December 31, 2020
	Level 1		Level 2		Total		Level 1		Level 2		Total
Assets:
Money market funds	$	2,132	$	—	$	2,132	$	886	$	—	$	886
Corporate obligations	—		2,245		2,245		—		513		513
U.S. government and agency securities	3,326		401		3,727		4,394		—		4,394
Non-U.S. government and agency securities	—		808		808		—		150		150
Mutual funds	15		—		15		18		—		18
Total assets	$	5,473	$	3,454	$	8,927	$	5,298	$	663	$	5,961
Liabilities:
Deferred compensation	$	367	$	—	$	367	$	350	$	—	$	350
Total liabilities	$	367	$	—	$	367	$	350	$	—	$	350