Supplemental Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2018

Supplemental Balance Sheet Information [Abstract]

Restrictions on Cash and Cash Equivalents [Table Text Block]

	As of
(in millions)	June 30, 2018		December 31, 2017
Cash and cash equivalents	$	208	$	188
Restricted cash and restricted cash equivalents included in Other current assets	756		803
Restricted cash equivalents included in Other long-term assets	31		26
	$	994	$	1,017

Trade accounts receivable, net

	As of
(in millions)	June 30, 2018			December 31, 2017
Accounts receivable	$	1,650		$	1,645
Allowance for doubtful accounts	(63		)	(68		)
Allowance for sales returns (1)	—			(30		)
	$	1,587		$	1,548

(1) Due to the adoption of FASB ASC Topic 606 effective January 1, 2018, the allowance for sales returns has been prospectively reclassified from Trade accounts receivable, net to Other current liabilities within the unaudited condensed consolidated balance sheets. Prior period balances remain unchanged.

	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2018			2017			2018			2017
Beginning balance	$	67		$	75		$	68		$	73
Net charges to expenses	4			2			8			5
Utilization of allowances	(8		)	(3		)	(14		)	(4		)
Ending balance	$	63		$	74		$	63		$	74

Inventory Disclosure [Text Block]

	As of
(in millions)	June 30, 2018		December 31, 2017
Finished goods	$	689	$	685
Work-in-process	102		110
Raw materials	296		284
	$	1,087	$	1,078

Property, plant and equipment, net

	As of
(in millions)	June 30, 2018			December 31, 2017
Land	$	102		$	102
Buildings and improvements	1,124			1,120
Equipment, furniture and fixtures	3,255			3,183
Capital in progress	229			219
	4,709			4,625
Accumulated depreciation	(2,995		)	(2,928		)
	$	1,715		$	1,697

Schedule of Accrued Liabilities

	As of
(in millions)	June 30, 2018		December 31, 2017
Legal reserves	$	1,043	$	1,176
Payroll and related liabilities	528		591
Accrued contingent consideration	52		36
Other	644		653
	$	2,266	$	2,456

Other long-term liabilities

	As of
(in millions)	June 30, 2018		December 31, 2017
Accrued income taxes	$	781	$	1,275
Legal reserves	221		436
Accrued contingent consideration	227		133
Other	716		525
	$	1,945	$	2,370