Condensed Consolidated Statements of Cash Flow (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Operating activities
Net loss		$ (104)	$ (231)
Depreciation and amortization		29	23
Gain on divestitures		0	(77)
Assets impairment charge		0	144
Undistributed (gain) loss from equity method investments		(7)	18
Stock-based compensation		2	2
Other, net		(6)	(4)
Change in operating assets and liabilities:
Receivables, gross		5	36
Accrued expenses		(11)	17
Related party receivables and payables, net		1	4
Accounts payable		6	9
Prepaid expenses and other contract assets		(2)	21
Inventories, gross		(9)	7
Income taxes		(18)	20
Other current assets and liabilities, net		4	2
Net cash used in operating activities		(110)	(9)
Investing activities
Proceeds from divestitures		0	176
Capital expenditures		(12)	(27)
Equity method investment		13
Equity method investment			(16)
Net cash provided by investing activities		1	133
Financing activities
Dividend paid to non-controlling interest		0	(5)
(Payments for) proceeds from long-term debt		2	(1)
Payments for short-term debt		(1)	(1)
Proceeds from exercise of stock options		1	0
Net cash (used in) provided by financing activities		2	(7)
Effect of exchange rate changes on cash and cash equivalents		(6)	(6)
Increase (decrease) in cash and cash equivalents		(113)	111
Cash and cash equivalents at beginning of period		758	859
Cash and cash equivalents at end of period1	[1]	$ 645	$ 970

[1] As of March 31, 2021 cash and cash equivalents includes $1 million of restricted cash.