Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flow from Operating Activities:
Net Income	$ 230	$ 216
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	251	222
Regulatory assets/liabilities amortization and carrying cost	18	14
Pension cost	20	25
Earnings from equity method investments	6	(1)
Distributions of earnings received from equity method investments	3	2
Unrealized (gain) loss on marked-to-market derivative contracts	(18)	(3)
Deferred taxes	10	21
Other non-cash items	1	(2)
Changes in operating assets and liabilities:
Current assets	(16)	(43)
Noncurrent assets	(55)	(40)
Current liabilities	(117)	(44)
Noncurrent liabilities	(26)	(52)
Net Cash Provided by Operating Activities	307	315
Cash Flow from Investing Activities:
Capital expenditures	(742)	(425)
Contributions in aid of construction	7	10
Proceeds from sale of assets	6	3
Proceeds from notes receivable from affiliates	2	0
Distributions received from equity method investments	1	2
Other investments and equity method investments, net	(23)	(116)
Net Cash Used in Investing Activities	(749)	(526)
Cash Flow from Financing Activities:
Non-current debt issuances	0	194
Repayments of non-current debt	(3)	(43)
Receipts of other short-term debt, net	187	211
Repayments of financing leases	(1)	(21)
Distributions to noncontrolling interests	(1)	(3)
Contributions from noncontrolling interests	244	3
Dividends paid	(136)	(135)
Net Cash Provided by Financing Activities	290	206
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(152)	(5)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	184	43
Cash, Cash Equivalents and Restricted Cash, End of Period	32	38
Supplemental Cash Flow Information
Cash paid for interest, net of amounts capitalized	70	58
Cash paid for income taxes	$ 2	$ 2