Additional Information (Tables)

12 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Nonoperating Income (Expense)

	For the Years Ended December 31,
(in millions)	2017			2016			2015
Research and development expense	$	241		$	203		$	186
Advertising expense	$	29		$	27		$	25
Interest and other debt expense, net:
Interest expense	$	727		$	754		$	808
Interest income	(31		)	(13		)	(4		)
Interest related to NPM Adjustment Items	9			6			13
	$	705		$	747		$	817
Rent expense	$	43		$	53		$	48

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, 2017 were as follows:

(in millions)	Rental Commitments		Sublease Income
2018	$	38	$	5
2019	33		5
2020	28		5
2021	26		5
2022	23		5
Thereafter	44		5
	$	192	$	30

Schedule of Valuation and Qualifying Accounts

The activity in the allowance for discounts and allowance for returned goods for the years ended December 31, 2017, 2016 and 2015 was as follows:

(in millions)	2017						2016						2015
	Discounts			Returned Goods			Discounts			Returned Goods			Discounts			Returned Goods
Balance at beginning of year	$	—		$	49		$	—		$	68		$	—		$	46
Charged to costs and expenses	626			130			628			133			618			217
Deductions (1)	(626		)	(139		)	(628		)	(152		)	(618		)	(195		)
Balance at end of year	$	—		$	40		$	—		$	49		$	—		$	68

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