Segment Information (Schedule of Financial Information for Each Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Sales
Sales	$ 794	$ 970
Operating income
Operating income	22	35
Interest expense	(8)	(11)
Income before income taxes	14	24
Total assets
Total assets	2,301		$ 2,325
United States [Member]
Sales
Sales	638	779
Operating income
Operating income	18	32
Total assets
Total assets	1,913		1,915
Canada [Member]
Sales
Sales	50	68
Total assets
Total assets	95		91
International [Member]
Sales
Sales	106	123
Operating income
Operating income	4	$ 3
Total assets
Total assets	$ 293		$ 319