Consolidated Statements of Cash Flows - EGTS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income attributable to parent	$ 2,721	$ 5,790	$ 6,943
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	4,286	3,881	3,455
Allowance for equity funds	(167)	(126)	(165)
Deferred income taxes	(467)	646	1,880
Other, net	59	(57)	(23)
Changes in other operating assets and liabilities:
Trade receivables and other assets	20	553	(1,318)
Pension and other postretirement benefit plans	(27)	(39)	(65)
Accrued property, income and other taxes	397	(489)	(134)
Accounts payable and other liabilities	751	163	501
Net cash flows from operating activities	9,359	8,692	6,224
Cash flows from investing activities:
Capital expenditures	(7,505)	(6,611)	(6,765)
Other, net	12	(74)	76
Net cash flows from investing activities	(7,750)	(5,763)	(13,165)
Cash flows from financing activities:
Other, net	(274)	(70)	(162)
Net cash flows from financing activities	(1,006)	(3,131)	7,103
Net change in cash and cash equivalents and restricted cash and cash equivalents	573	(201)	177
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,244	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,817	1,244	1,445
EGTS
Cash flows from operating activities:
Net income attributable to parent	261	156	(181)
Adjustments to reconcile net income to net cash flows from operating activities:
Losses on other items, net	1	(8)	517
Depreciation and amortization	152	166	163
Allowance for equity funds	(4)	(6)	(12)
Other changes in regulatory assets and liabilities	61	0	24
Deferred income taxes	92	93	(121)
Other, net	6	(7)	26
Changes in other operating assets and liabilities:
Trade receivables and other assets	(48)	48	49
Receivables from affiliates	(4)	(46)	4
Pension and other postretirement benefit plans	0	(17)	(85)
Accrued property, income and other taxes	18	(23)	10
Accounts payable and other liabilities	25	0	5
Accounts payable to affiliates	(8)	11	(32)
Net cash flows from operating activities	552	367	367
Cash flows from investing activities:
Capital expenditures	(275)	(358)	(263)
Loans to affiliates	(8)	(14)	0
Repayment of loans by affiliates	11	19	0
Other, net	(14)	(4)	(2)
Net cash flows from investing activities	(286)	(357)	(265)
Cash flows from financing activities:
Notes payable to affiliate, net	(32)	(13)	34
Proceeds from equity contributions	0	20	0
Dividends paid	(215)	(18)	(125)
Other, net	0	4	0
Net cash flows from financing activities	(247)	(7)	(91)
Net change in cash and cash equivalents and restricted cash and cash equivalents	19	3	11
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	26	23	12
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 45	$ 26	$ 23