Consolidated Statements of Cash Flows (Unaudited) - SPPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Net repayments of short-term debt	(316)	(815)
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	2,942	2,096
SPPC
Cash flows from operating activities:
Net income (loss)	107	90
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	107	104
Allowance for equity funds	(5)	(3)
Changes in regulatory assets and liabilities	(30)	(30)
Deferred income taxes and investment tax credits, net	10	3
Deferred energy	(95)	(5)
Amortization of deferred energy	12	(6)
Other, net	(1)	0
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(25)	(83)
Inventories	9	(18)
Accrued property, income and other taxes, net	3	8
Accounts payable and other liabilities	21	119
Net cash flows from operating activities	113	179
Cash flows from investing activities:
Capital expenditures	(196)	(192)
Net cash flows from investing activities	(196)	(192)
Cash flows from financing activities:
Proceeds from long-term debt	0	30
Net repayments of short-term debt	82	0
Dividends paid	0	(20)
Other, net	(5)	(3)
Net cash flows from financing activities	77	7
Net change in cash and cash equivalents and restricted cash and cash equivalents	(6)	(6)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	26	32
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 20	$ 26