CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Revenue:
Total revenue	$ 2,724		$ 3,400	$ 3,363
Operating expenses:
Selling, general and administrative	701		707	697
Research and development	166		188	202
Depreciation, amortization and impairments	554		647	690
Goodwill, Impairment Loss	54		0	0
Restructuring and other	67		28	253
Operating income	22		546	266
Other (expense) income:
Interest expense	(503)		(589)	(597)
(Loss) earnings from equity investments	(6)		24	25
Loss on debt financing transactions	(1)		(100)	(93)
(Loss) gain on remeasurement of debt	(51)		9	43
Other (expense) income, net	(5)		2	17
Total other expense, net	(566)		(654)	(605)
Net (loss) income before income taxes	(544)		(108)	(339)
Income tax expense	(4)		(10)	(13)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(548)		(118)	(352)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	21		12	0
Net (loss) income attributable to SGC	$ (569)		$ (130)	$ (352)
Basic and diluted net loss attributable to SGC per share:
Basic (in dollars per share)	$ (6.02)		$ (1.40)	$ (3.87)
Earnings Per Share, Diluted	$ (6.02)		$ (1.40)	$ (3.87)
Weighted average number of shares used in per share calculations:
Basic shares (in shares)	95		93	91
Weighted Average Number of Shares Outstanding, Diluted	95		93	91
Services
Revenue:
Total revenue	$ 1,593		$ 1,819	$ 1,777
Operating expenses:
Cost of revenues	531	[1]	538	505
Product sales
Revenue:
Total revenue	553		994	994
Operating expenses:
Cost of revenues	349	[1]	457	466
Instant products
Revenue:
Total revenue	578		587	592
Operating expenses:
Cost of revenues	$ 280	[1]	$ 289	$ 284

[1] Exclusive of D&A.