Costs Associated with Exit and Restructuring (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Summary of Exit and Restructuring Costs Incurred

The Company incurred total exit and restructuring costs as follows (in millions):

Type of Cost	Cumulative costs incurred through December 31, 2017		Costs incurred for the year ended December 31, 2017		Cumulative costs incurred through December 31, 2016
Severance, stay bonuses, and other employee-related expenses	$	69	$	15	$	54
Obligations for future lease payments	12		1		11
Total	$	81	$	16	$	65

Rollforward of Exit and Restructuring Accruals

A rollforward of the exit and restructuring accruals is as follows (in millions):

	Year Ended December 31,
	2017			2016
Balance at beginning of year	$	10		$	15
Charged to earnings	16			19
Cash paid	(18		)	(22		)
WLAN Divestiture	—			(2		)
Balance at the end of year	$	8		$	10

Schedule of Liabilities Related to Exit and Restructuring Activities Included in Consolidated Balance Sheets

Liabilities related to exit and restructuring activities are included in the following reported financial statement line items in the Company’s Consolidated Balance Sheets (in millions):

	Year Ended December 31,
	2017		2016
Accrued liabilities	$	6	$	7
Other long-term liabilities	2		3
Total liabilities related to exit and restructuring activities	$	8	$	10