CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue		$ 725	$ 837
Operating expenses:
Selling, general and administrative		198	186
Research and development		51	49
Depreciation, amortization and impairments		138	165
Restructuring and other		22	7
Operating Income (Loss), Total		(32)	123
Other (expense) income:
Interest expense		(124)	(154)
(Loss) earnings from equity investments		(2)	6
Gain (Loss) on Extinguishment of Debt		10	5
Gain on remeasurement of debt		10	5
Other expense, net		(3)	0
Total other expense, net		(119)	(143)
Net income (loss) before income taxes		(151)	(20)
Income tax expense		(4)	(4)
Net Income (Loss) Attributable to Parent, Total		(155)	(24)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent		(83)	55
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax		2	1
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		(16)	(5)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total		(97)	51
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total		$ (256)	$ 27
Basic and diluted net loss attributable to SGC per share:
Basic (in dollars per share)		$ (1.69)	$ (0.26)
Diluted (in dollars per share)		$ (1.69)	$ (0.26)
Weighted average number of shares used in per share calculations:
Basic (in shares)		94	92
Diluted (in shares)		94	92
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		$ 4	$ 0
Goodwill, Impairment Loss		54	0
Accumulated Loss
Other (expense) income:
Net Income (Loss) Attributable to Parent, Total		(159)	(24)
Services
Revenue:
Total revenue		422	459
Operating expenses:
Cost of services, cost of product sales and cost of instant products	[1]	130	133
Product sales
Revenue:
Total revenue		168	238
Operating expenses:
Cost of services, cost of product sales and cost of instant products	[1]	91	107
Instant Products [Member]
Revenue:
Total revenue		135	140
Operating expenses:
Cost of services, cost of product sales and cost of instant products	[1]	$ 73	$ 67

[1] Exclusive of D&A