Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($) $ in Millions	8 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 93	$ 514	$ 93
Accounts receivable	1,642	1,665	1,642
Property, plant, and equipment, net	25,317	27,969	25,317
Goodwill	2,464	2,466	2,464	$ 2,293
Intangible assets	2,378	2,328	2,378
Total Assets	42,268	45,496	42,268	$ 36,288
LIABILITIES
Short-term borrowings	828	38	828
Total
ASSETS
Cash and cash equivalents	27	54	27
Accounts receivable	27	36	27
Inventories	74	107	74
Property, plant, and equipment, net	443	425	443
Goodwill	25	25	25
Intangible assets	542	527	542
Other current and long-term assets	2	35	2
Total Assets	1,140	1,209	1,140
LIABILITIES
Accounts payable and accrued current liabilities	15	22	15
Short-term borrowings	0	38	0
Other current and long-term liabilities	14	11	14
Total liabilities	29	71	29
SGG
ASSETS
Cash and cash equivalents	16	34	16
Accounts receivable	8	8	8
Inventories	0	0	0
Property, plant, and equipment, net	410	402	410
Goodwill	25	25	25
Intangible assets	542	527	542
Other current and long-term assets	2	2	2
Total Assets	1,003	998	1,003
LIABILITIES
Accounts payable and accrued current liabilities	2	0	2
Short-term borrowings	0	0	0
Other current and long-term liabilities	7	7	7
Total liabilities	$ 9	$ 7	$ 9
VIE ownership and non-ownership percentage		100.00%	100.00%
VIE ownership percentage	85.00%	85.00%
Other
ASSETS
Cash and cash equivalents	$ 11	$ 20	$ 11
Accounts receivable	19	28	19
Inventories	74	107	74
Property, plant, and equipment, net	33	23	33
Goodwill	0	0	0
Intangible assets	0	0	0
Other current and long-term assets	0	33	0
Total Assets	137	211	137
LIABILITIES
Accounts payable and accrued current liabilities	13	22	13
Short-term borrowings	0	38	0
Other current and long-term liabilities	7	4	7
Total liabilities	$ 20	$ 64	$ 20