Summary of Significant Accounting Standards and Policies - Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of revenue
Net sales	$ 1,349	$ 1,550	$ 2,892	$ 3,086
Cost of sales	1,078	1,221	2,298	2,441
Gross profit	$ 271	329	$ 594	645
North America
Disaggregation of revenue
Net sales		977		1,928
South America
Disaggregation of revenue
Net sales		226		454
Asia-Pacific
Disaggregation of revenue
Net sales		203		406
EMEA
Disaggregation of revenue
Net sales		144		298
Change In Presentation, Shipping and Handling Costs | As Previously Reported
Disaggregation of revenue
Net sales before shipping and handling costs		1,550		3,086
Less: shipping and handling costs		116		232
Net sales		1,434		2,854
Cost of sales		1,105		2,209
Gross profit		329		645
Change In Presentation, Shipping and Handling Costs | As Previously Reported | North America
Disaggregation of revenue
Net sales		885		1,745
Change In Presentation, Shipping and Handling Costs | As Previously Reported | South America
Disaggregation of revenue
Net sales		215		433
Change In Presentation, Shipping and Handling Costs | As Previously Reported | Asia-Pacific
Disaggregation of revenue
Net sales		195		389
Change In Presentation, Shipping and Handling Costs | As Previously Reported | EMEA
Disaggregation of revenue
Net sales		$ 139		$ 287