Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 832	$ 1,215
Operating Income (Loss)	(13)	(822)
Operating income (loss) before impairment and other charges	(13)	21
Long-lived asset impairment	0	(817)
Restructuring Charges	0	(26)
Interest Expense	(70)	(58)
Reorganization Items	0	(9)
Other Expense, Net	(4)	(25)
Loss Before Income Taxes	(87)	(914)
Assets	5,295		$ 5,434
Elimination of Intercompany margins associated with transfers of assets and inventory	0	8
Operating Segments
Segment Reporting Information [Line Items]
Revenue	832	1,215
Operating Income (Loss)	5	47
Operating Segments | Western Hemisphere
Segment Reporting Information [Line Items]
Revenue	390	588
Operating Income (Loss)	24	29
Operating Segments | Eastern Hemisphere
Segment Reporting Information [Line Items]
Revenue	442	627
Operating Income (Loss)	(19)	18
Corporate, Non-Segment
Segment Reporting Information [Line Items]
General and Administrative Expense	$ (18)	$ (26)