CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (353)	$ (99)
Adjustments to reconcile net loss to cash provided by operating activities	460	440
Changes in working capital accounts, net of effects of acquisitions	57	(86)
Changes in deferred income taxes and other	8	7
Net cash provided by operating activities	172	262
Cash flows from investing activities:
Capital expenditures	(92)	(132)
Acquisition of business, net of cash acquired	(13)	0
(Contributions) distributions of capital from equity investments, net	(1)	17
Proceeds from sale of asset and other	22	0
Net cash used in investing activities	(84)	(115)
Cash flows from financing activities:
Proceeds from Lines of Credit	530	40
Repayments under SGI revolving credit facility	(90)	(320)
Proceeds from issuance of senior notes and term loans	0	1,100
Repayment of senior notes and term loans (including redemption premium)	0	(1,050)
Payments on long-term debt	(20)	(23)
Payment of Deferred Financing Costs	(1)	(15)
Payments on license obligations	(15)	(13)
Sale of future revenue	0	11
Proceeds from Issuance of Common Stock	0	342
Payments of Stock Issuance Costs	0	(8)
Net redemptions of common stock under stock-based compensation plans and other	(2)	(7)
Net Cash Provided by (Used in) Financing Activities, Total	402	57
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(1)	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	489	205
Cash, cash equivalents and restricted cash, beginning of period	375	220
Cash, cash equivalents and restricted cash, end of period	864	425
Supplemental cash flow information:
Cash paid for interest	224	270
Income taxes paid	7	18
Distributed earnings from equity investments	13	22
Supplemental non-cash transactions:
Non-cash interest expense	$ 11	$ 13