Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

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.

	March 31, 2019								December 31, 2018
	Total			Level 1		Level 2			Total			Level 1		Level 2
Assets
Money market funds		$2,661			$2,661					$1,737			$1,737
Available-for-sale debt investments:
Commercial paper	103						$103		78						$78
Corporate notes	357					357			420					420
Other equity investments	13			13					12			12
Derivatives	34					34			28					28
Total assets		$3,168			$2,674		$494			$2,275			$1,749		$526
Liabilities
Derivatives		($97	)				($97	)		($112	)				($112	)
Total liabilities		($97	)				($97	)		($112	)				($112	)

Fair Value, Assets Measured On Nonrecurring Basis Using Unobservable Inputs

Certain assets have been measured at fair value on a nonrecurring basis using significant unobservable inputs (Level 3). The following table presents the nonrecurring losses recognized for the three months ended March 31 due to long-lived asset impairment and the fair value and asset classification of the related assets as of the impairment date:

	2019					2018
	Fair Value		Total Losses			Fair Value		Total Losses
Operating lease equipment							$20		($8	)
Investments		$90		($33	)			(12		)
Property, plant and equipment	43		(1		)
Total		$133		($34	)		$20		($20	)

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 Condensed Consolidated Statements of Financial Position were as follows:

	March 31, 2019
	Carrying Amount			Total Fair Value			Level 1	Level 2			Level 3
Assets
Notes receivable, net		$609			$621				$621
Liabilities
Debt, excluding capital lease obligations and commercial paper	(12,589		)	(13,770		)		(13,707		)		($63	)

	December 31, 2018
	Carrying Amount			Total Fair Value			Level 1	Level 2			Level 3
Assets
Notes receivable, net		$730			$735				$735
Liabilities
Debt, excluding capital lease obligations and commercial paper	(11,796		)	(12,746		)		(12,682		)		($64	)