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Segment Information - Sales and long-lived assets (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment information
Net sales	$ 1,549	$ 1,574	$ 1,550	$ 1,536	$ 1,537	$ 1,563	$ 1,608	$ 1,581	$ 6,209	$ 6,289	$ 6,244
Long-lived assets	2,629				2,329				2,629	2,329
North America
Segment information
Net sales										3,857	3,843
US
Segment information
Net sales									2,368	2,386	2,423
Long-lived assets	1,239				1,004				1,239	1,004
Mexico
Segment information
Net sales									1,075	1,067	1,011
Long-lived assets	343				318				343	318
Brazil
Segment information
Net sales									479	478	534
Long-lived assets	205				207				205	207
Canada
Segment information
Net sales									390	404	408
Long-lived assets	187				165				187	165
Thailand
Segment information
Long-lived assets	156				137				156	137
Germany
Segment information
Long-lived assets	129				129				129	129
Korea
Segment information
Net sales									270	296	285
Long-lived assets	110				110				110	110
Other countries
Segment information
Net sales									1,627	1,658	$ 1,583
Long-lived assets	$ 260				$ 259				$ 260	$ 259