Consolidated Statements of Cash Flows (Unaudited) - EGTS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income (loss)	$ 653	$ 989
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation and amortization	1,025	1,063
Allowance for equity funds	(83)	(49)
Deferred income taxes	(81)	(11)
Other, net	(8)	15
Changes in other operating assets and liabilities:
Trade receivables and other assets	67	161
Accrued property, income and other taxes	(353)	(177)
Accounts payable and other liabilities	113	(106)
Net cash flows from operating activities	1,986	1,095
Cash flows from investing activities:
Capital expenditures	(2,153)	(1,848)
Purchases of marketable securities	(100)	(106)
Proceeds from sales of marketable securities	108	1,091
Other, net	13	0
Net cash flows from investing activities	(2,149)	(1,778)
Cash flows from financing activities:
Net cash flows from financing activities	2,313	20
Net change in cash and cash equivalents and restricted cash and cash equivalents	2,148	(662)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,811	1,817
Cash and cash equivalents and restricted cash and cash equivalents at end of period	3,959	1,155
EGTS
Cash flows from operating activities:
Net income (loss)	87	68
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation and amortization	38	37
Allowance for equity funds	(1)	(1)
Other changes in regulatory assets and liabilities	(8)	(85)
Deferred income taxes	17	8
Other, net	0	1
Changes in other operating assets and liabilities:
Trade receivables and other assets	22	42
Receivables from affiliates	1	0
Gas balancing activities	4	17
Accrued property, income and other taxes	7	(15)
Accounts payable and other liabilities	(6)	21
Accounts payable to affiliates	(12)	0
Net cash flows from operating activities	149	93
Cash flows from investing activities:
Capital expenditures	(39)	(37)
Purchases of marketable securities	0	(3)
Proceeds from sales of marketable securities	3	0
Other, net	1	0
Net cash flows from investing activities	(35)	(40)
Cash flows from financing activities:
Issuance (repayment) of notes payable to affiliates, net	3	(23)
Dividends paid	(96)	0
Net cash flows from financing activities	(93)	(23)
Net change in cash and cash equivalents and restricted cash and cash equivalents	21	30
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	34	45
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 55	$ 75