Consolidated Statements of Cash Flows (Unaudited) - PAC - 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)
Derivative collateral, net	115	53
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)
Other, net	(91)	37
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
PAC
Cash flows from operating activities:
Net income (loss)	726	628
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	811	696
Allowance for equity funds	(38)	(73)
Changes in regulatory assets and liabilities	(185)	(17)
Deferred income taxes and investment tax credits, net	33	(48)
Other, net	0	2
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(1)	(150)
Inventories	17	(97)
Derivative collateral, net	19	22
Prepaid expenses	(11)	(4)
Accrued property, income and other taxes, net	96	84
Accounts payable and other liabilities	77	248
Net cash flows from operating activities	1,544	1,291
Cash flows from investing activities:
Capital expenditures	(1,157)	(1,618)
Other, net	7	31
Net cash flows from investing activities	(1,150)	(1,587)
Cash flows from financing activities:
Proceeds from long-term debt	984	987
Repayments of long-term debt	(400)	0
Net repayments of short-term debt	(93)	(130)
Other, net	(5)	0
Net cash flows from financing activities	486	857
Net change in cash and cash equivalents and restricted cash and cash equivalents	880	561
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	19	36
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 899	$ 597