Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	8 Months Ended	9 Months Ended
	Dec. 31, 2019	Sep. 30, 2020
ASSETS
Cash and cash equivalents	$ 93	$ 945
Accounts receivable	1,642	1,419
Property, plant, and equipment, net	25,317	27,159
Goodwill	2,464	2,465
Total Assets	41,882	44,439
LIABILITIES
Short-term borrowings	828	988
Total
ASSETS
Cash and cash equivalents	27	55
Accounts receivable	27	25
Inventories	74	102
Property, plant, and equipment, net	443	429
Goodwill	25	25
Intangible assets	542	531
Other current and long-term assets	2	20
Total Assets	1,140	1,187
LIABILITIES
Accounts payable and accrued current liabilities	15	19
Short-term borrowings	0	21
Other current and long-term liabilities	14	10
Total liabilities	29	50
SGG
ASSETS
Cash and cash equivalents	16	33
Accounts receivable	8	7
Inventories	0	0
Property, plant, and equipment, net	410	404
Goodwill	25	25
Intangible assets	542	531
Other current and long-term assets	2	1
Total Assets	1,003	1,001
LIABILITIES
Accounts payable and accrued current liabilities	2	0
Short-term borrowings	0	0
Other current and long-term liabilities	7	6
Total liabilities	$ 9	$ 6
VIE ownership and non-ownership percentage		100.00%
VIE ownership percentage	85.00%	85.00%
Other
ASSETS
Cash and cash equivalents	$ 11	$ 22
Accounts receivable	19	18
Inventories	74	102
Property, plant, and equipment, net	33	25
Goodwill	0	0
Intangible assets	0	0
Other current and long-term assets	0	19
Total Assets	137	186
LIABILITIES
Accounts payable and accrued current liabilities	13	19
Short-term borrowings	0	21
Other current and long-term liabilities	7	4
Total liabilities	$ 20	$ 44