Business Segments (Tables)

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Summary of Operating Results by Reportable Segment

Operating results by reportable segment are as follows (in millions): 

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Revenue:
United States	$	337		$	496		$	694		$	1,097
Canada		55			89			118			205
International		109			165			237			311
Total revenue	$	501		$	750		$	1,049		$	1,613
Operating profit (loss):
United States	$	(44	)	$	(23	)	$	(103	)	$	(35	)
Canada		(8	)		(5	)		(14	)		(2	)
International		(5	)		1			(5	)		2
Total operating profit (loss)	$	(57	)	$	(27	)	$	(122	)	$	(35	)
Operating profit (loss) % of revenue:
United States		(13.1	%)		(4.6	%)		(14.8	%)		(3.2	%)
Canada		(14.5	%)		(5.6	%)		(11.9	%)		(1.0	%)
International		(4.6	%)		0.6	%		(2.1	%)		0.6	%
Total operating profit (loss) %		(11.4	%)		(3.6	%)		(11.6	%)		(2.2	%)