Consolidated Statements of Cash Flows (Unaudited) - SPPC - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 2,285	$ 1,786
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(56)	(72)
Changes in regulatory assets and liabilities	(199)	(7)
Deferred income taxes and amortization of investment tax credits	613	288
Other, net	(26)	18
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(254)	(783)
Accrued property, income and other taxes, net	76	(605)
Accounts payable and other liabilities	187	240
Net cash flows from operating activities	4,232	1,854
Cash flows from investing activities:
Capital expenditures	(2,848)	(2,793)
Net cash flows from investing activities	(2,975)	(3,838)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	245	(920)
Other, net	(28)	(39)
Net cash flows from financing activities	(1,204)	2,798
Net change in cash and cash equivalents and restricted cash and cash equivalents	55	802
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	1,500	2,070
SPPC
Cash flows from operating activities:
Net income (loss)	45	38
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	72	68
Allowance for equity funds	(3)	(2)
Changes in regulatory assets and liabilities	(20)	(24)
Deferred income taxes and amortization of investment tax credits	8	(6)
Deferred energy	(47)	21
Amortization of deferred energy	2	1
Other, net	(2)	1
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(1)	11
Inventories	10	(19)
Accrued property, income and other taxes, net	(1)	10
Accounts payable and other liabilities	29	18
Net cash flows from operating activities	92	117
Cash flows from investing activities:
Capital expenditures	(128)	(110)
Net cash flows from investing activities	(128)	(110)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	29	0
Dividends paid	0	(20)
Other, net	(4)	(2)
Net cash flows from financing activities	25	(22)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(11)	(15)
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	$ 15	$ 17