Fair Value (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Carrying And Fair Values Of Other Financial Assets And Liabilities

The following tables present the fair values of

our other financial assets and liabilities on December 31, 2021 and 2020, and the basis for determining their fair values:

	Carrying Value		Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial Assets (Liabilities)	December 31, 2021
Measured at fair value:
Marketable securities held in trust:
Cash and equivalents	$	4	$	4	$	—	$	4	$	—
Available-for-sale debt securities	125		125		—		125		—
Equity securities	62		62		62		—		—
Other investments	12		12		—		—		12
Cash flow hedge assets	320		320		—		320		—
Cash flow hedge liabilities	(98)		(98)		—		(98)		—
Measured at amortized cost:
Short- and long-term debt principal	(11,606)		(12,549)		—		(12,549)		—
	December 31, 2020
Measured at fair value:
Marketable securities held in trust:
Cash and equivalents	$	19	$	19	$	17	$	2	$	—
Available-for-sale debt securities	134		134		—		134		—
Equity securities	58		58		58		—		—
Other investments	9		9		—		—		9
Cash flow hedge assets	498		498		—		498		—
Cash flow hedge liabilities	(79)		(79)		—		(79)		—
Measured at amortized cost:
Short- and long-term debt principal	(13,117)		(14,606)		—		(14,606)		—