Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value, Assets And Liabilities Measured On Recurring Basis

The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy.

	December 31, 2020			December 31, 2019
	Total	Level 1	Level 2	Total	Level 1	Level 2
Assets
Money market funds	$2,230	$2,230		$2,562	$2,562
Available-for-sale debt investments:
Commercial paper	149		$149	108		$108
Corporate notes	333		333	242		242
U.S. government agencies	114		114	55	55
Other equity investments	54	54		33	33
Derivatives	76		76	14		$14
Total assets	$2,956	$2,284	$672	$3,014	$2,650	$364
Liabilities
Derivatives	($69)		($69)	($118)		($118)
Total liabilities	($69)		($69)	($118)		($118)

Fair Value, Assets Measured On Nonrecurring Basis Using Unobservable Inputs

The following table presents the nonrecurring losses recognized for the years ended December 31 due to long-lived asset impairment, and the fair value and asset classification of the related assets as of the impairment date:

	2020		2019
	Fair Value	Total Losses	Fair Value	Total Losses
Investments	$22	($81)	$27	($109)
Customer financing assets	105	(24)	$111	(20)
Other assets and Acquired intangible assets	298	(221)	4	(310)
Property, plant and equipment	79	(84)	41	(4)
Total	$504	($410)	$183	($443)

Fair Value, Assets Measured On Nonrecurring Basis, Valuation Techniques

For Level 3 assets that were measured at fair value on a nonrecurring basis during the year ended December 31, 2020, the following table presents the fair value of those assets as of the measurement date, valuation techniques and related unobservable inputs of those assets.

	Fair Value	Valuation Technique(s)	Unobservable Input	Range Median or Average
Customer financing assets	$105	Market approach	Aircraft value publications	$85 - $169(1) Median $116
			Aircraft condition adjustments	($14) - $3(2) Net ($11)

(1)The range represents the sum of the highest and lowest values for all aircraft subject to fair value measurement, according to the third party aircraft valuation publications that we use in our valuation process.

(2)The negative amount represents the sum, for all aircraft subject to fair value measurement, of all downward adjustments based on consideration of individual aircraft attributes and condition. The positive amount represents the sum of all such upward adjustments.

Fair Values And Related Carrying Values Of Financial Instruments

The fair values and related carrying values of financial instruments that are not required to be remeasured at fair value on the Consolidated Statements of Financial Position at December 31 were as follows:

	December 31, 2020
	Carrying Amount	Total Fair Value	Level 1	Level 2	Level 3
Assets
Notes receivable, net	$420	$488		$488
Liabilities
Debt, excluding finance lease obligations	(63,380)	(72,357)		(72,342)	($15)

	December 31, 2019
	Carrying Amount	Total Fair Value	Level 1	Level 2	Level 3
Assets
Notes receivable, net	$443	$444		$444
Liabilities
Debt, excluding finance lease obligations and commercial paper	(20,964)	(23,119)		(23,081)	($38)