Additional Information (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Nonoperating Income (Expense)

	For the Years Ended December 31,
(in millions)	2018			2017			2016
Research and development expense	$	252		$	241		$	203
Advertising expense	$	37		$	29		$	27
Interest and other debt expense, net:
Interest expense	$	697		$	727		$	754
Interest income	(32		)	(31		)	(13		)
Interest related to NPM Adjustment Items	—			9			6
	$	665		$	705		$	747
Rent expense	$	42		$	43		$	53

Schedule of Rental Commitments and Sublease Income Under Non-Cancelable Operating Leases

Minimum rental commitments and sublease income under non-cancelable operating leases in effect at December 31, 2018 were as follows:

(in millions)	Rental Commitments		Sublease Income
2019	$	41	$	5
2020	35		5
2021	31		5
2022	24		5
2023	17		5
Thereafter	34		2
	$	182	$	27

Schedule of Valuation and Qualifying Accounts

The activity in the allowance for discounts and allowance for returned goods for the years ended December 31, 2018, 2017 and 2016 was as follows:

(in millions)	2018						2017						2016
	Discounts			Returned Goods			Discounts			Returned Goods			Discounts			Returned Goods
Balance at beginning of year	$	—		$	40		$	—		$	49		$	—		$	68
Charged to costs and expenses	620			97			626			130			628			133
Deductions (1)	(620		)	(105		)	(626		)	(139		)	(628		)	(152		)
Balance at end of year	$	—		$	32		$	—		$	40		$	—		$	49

⁽¹⁾ Represents the recording of discounts and returns for which allowances were created.

The activity in the allowance for losses on finance assets for the years ended December 31, 2018, 2017 and 2016 was as follows:

(in millions)	2018			2017			2016
Balance at beginning of year	$	23		$	32		$	42
Decrease to allowance	(4		)	(9		)	(10		)
Balance at end of year	$	19		$	23		$	32