Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 2,964	$ 2,190
Net income (attributable to parent)	3,047	2,202
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	3,831	3,447
Equity component of AFUDC	(99)	(175)
Losses on sales of other assets		87
Impairment charges	(16)	339
Deferred income taxes	736	1,099
Equity in earnings of unconsolidated affiliates	(137)	(49)
Accrued pension and other post-retirement benefit costs	13	46
Contributions to qualified pension plans	(77)	(141)
Payments for asset retirement obligations	(582)	(389)
Payment for disposal of other assets		(105)
Other rate case adjustments		37
Provision for rate refunds	61	375
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(4)	15
Receivables	62	(288)
Inventory	(3)	104
Other current assets	(134)	(648)
Increase (decrease) in
Accounts payable	(538)	389
Taxes accrued	125	122
Other current liabilities	(198)	(180)
Other assets	(264)	(585)
Other liabilities	(103)	(23)
Net cash provided by operating activities	5,637	5,667
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(8,084)	(6,752)
Contributions to equity method investments	(264)	(298)
Purchases of debt and equity securities	(3,105)	(2,763)
Proceeds from sales and maturities of debt and equity securities	3,092	2,718
Other	(272)	(175)
Net cash used in investing activities	(8,633)	(7,270)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	6,131	4,110
Proceeds from the issuance of preferred stock	1,963
Proceeds from the issuance of common stock	41	834
Payments for the redemption of long-term debt	(2,737)	(2,278)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days	339	243
Payments for the redemption of short-term debt with original maturities greater than 90 days	(479)	(207)
Notes payable and commercial paper	(879)	638
Contributions from noncontrolling interests	615
Dividends paid	(1,990)	(1,835)
Other	(17)	42
Net cash provided by financing activities	2,987	1,547
Net decrease in cash, cash equivalents and restricted cash	(9)	(56)
Cash, cash equivalents and restricted cash at beginning of period	591	505
Cash, cash equivalents and restricted cash at end of period	582	449
Significant non-cash transactions:
Accrued capital expenditures	1,073	1,016
Non-cash dividends	81	79
Duke Energy Carolinas [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	1,184	936
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,227	1,084
Equity component of AFUDC	(29)	(57)
Losses on sales of other assets		1
Impairment charges	11	191
Deferred income taxes	96	266
Accrued pension and other post-retirement benefit costs	(5)	3
Contributions to qualified pension plans	(7)	(46)
Payments for asset retirement obligations	(234)	(174)
Provision for rate refunds	34	163
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(7)	2
Receivables	(80)	(154)
Receivable from affiliated companies	74	(63)
Inventory	5	(11)
Other current assets	(117)	(54)
Increase (decrease) in
Accounts payable	(284)	69
Accounts payable to affiliated companies	(56)	(67)
Taxes accrued	91	(47)
Other current liabilities	44	(129)
Other assets	2	18
Other liabilities	(43)	(47)
Net cash provided by operating activities	1,906	1,884
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,984)	(2,006)
Purchases of debt and equity securities	(1,658)	(1,386)
Proceeds from sales and maturities of debt and equity securities	1,658	1,386
Other	(80)	(103)
Net cash used in investing activities	(2,064)	(2,109)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	819	991
Payments for the redemption of long-term debt	(5)	(704)
Notes payable to affiliated companies	(390)	700
Distributions to parent	(275)	(750)
Other	(1)	(1)
Net cash provided by financing activities	148	236
Net decrease in cash, cash equivalents and restricted cash	(10)	11
Cash, cash equivalents and restricted cash at beginning of period	33	16
Cash, cash equivalents and restricted cash at end of period	23	27
Significant non-cash transactions:
Accrued capital expenditures	261	299
Progress Energy [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	1,098	910
Net income (attributable to parent)	1,098	904
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,649	1,458
Equity component of AFUDC	(48)	(80)
Losses on sales of other assets		(23)
Impairment charges	(25)	34
Deferred income taxes	342	342
Accrued pension and other post-retirement benefit costs	14	18
Contributions to qualified pension plans	(57)	(45)
Payments for asset retirement obligations	(309)	(164)
Other rate case adjustments		37
Provision for rate refunds	13	101
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	9	14
Receivables	(128)	(316)
Receivable from affiliated companies	135	16
Inventory	45	119
Other current assets	79	(156)
Increase (decrease) in
Accounts payable	(64)	427
Accounts payable to affiliated companies	(6)	76
Taxes accrued	150	143
Other current liabilities	(96)	(28)
Other assets	(281)	(668)
Other liabilities	(90)	(34)
Net cash provided by operating activities	2,430	2,181
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(2,866)	(2,689)
Purchases of debt and equity securities	(1,304)	(1,216)
Proceeds from sales and maturities of debt and equity securities	1,300	1,225
Net proceeds from the sales of other assets		20
Notes receivable from affiliated companies		(205)
Other	(130)	(142)
Net cash used in investing activities	(3,000)	(3,007)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,295	1,785
Payments for the redemption of long-term debt	(1,263)	(719)
Notes payable to affiliated companies	554	(11)
Dividends to parent		(250)
Other	8	(3)
Net cash provided by financing activities	594	802
Net decrease in cash, cash equivalents and restricted cash	24	(24)
Cash, cash equivalents and restricted cash at beginning of period	112	87
Cash, cash equivalents and restricted cash at end of period	136	63
Significant non-cash transactions:
Accrued capital expenditures	400	441
Duke Energy Progress [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	650	532
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	996	869
Equity component of AFUDC	(44)	(41)
Losses on sales of other assets		(9)
Impairment charges		33
Deferred income taxes	144	187
Accrued pension and other post-retirement benefit costs	2	11
Contributions to qualified pension plans	(4)	(25)
Payments for asset retirement obligations	(288)	(133)
Other rate case adjustments		37
Provision for rate refunds	13	101
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(4)	3
Receivables	(9)	(154)
Receivable from affiliated companies	(11)	(3)
Inventory	15	62
Other current assets	65	(239)
Increase (decrease) in
Accounts payable	(54)	325
Accounts payable to affiliated companies	(80)	73
Taxes accrued	37	28
Other current liabilities	(17)	(27)
Other assets	(197)	(358)
Other liabilities	33	11
Net cash provided by operating activities	1,247	1,283
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,592)	(1,526)
Purchases of debt and equity securities	(656)	(831)
Proceeds from sales and maturities of debt and equity securities	632	807
Net proceeds from the sales of other assets		20
Notes receivable from affiliated companies		(52)
Other	(56)	(82)
Net cash used in investing activities	(1,672)	(1,664)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,270	796
Payments for the redemption of long-term debt	(603)	(2)
Notes payable to affiliated companies	(215)	(240)
Dividends to parent		(175)
Other	(1)	(1)
Net cash provided by financing activities	451	378
Net decrease in cash, cash equivalents and restricted cash	26	(3)
Cash, cash equivalents and restricted cash at beginning of period	23	20
Cash, cash equivalents and restricted cash at end of period	49	17
Significant non-cash transactions:
Accrued capital expenditures	182	261
Duke Energy Florida [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	586	514
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	647	581
Equity component of AFUDC	(4)	(40)
Impairment charges	(25)	1
Deferred income taxes	164	169
Accrued pension and other post-retirement benefit costs	8	4
Contributions to qualified pension plans	(53)	(20)
Payments for asset retirement obligations	(21)	(31)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	9	7
Receivables	(119)	(163)
Receivable from affiliated companies	27	(18)
Inventory	29	57
Other current assets	100	51
Increase (decrease) in
Accounts payable	(11)	101
Accounts payable to affiliated companies	67	9
Taxes accrued	101	198
Other current liabilities	(77)	1
Other assets	(81)	(308)
Other liabilities	(127)	(58)
Net cash provided by operating activities	1,220	1,055
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,274)	(1,162)
Purchases of debt and equity securities	(648)	(385)
Proceeds from sales and maturities of debt and equity securities	668	418
Notes receivable from affiliated companies		(80)
Other	(73)	(61)
Net cash used in investing activities	(1,327)	(1,270)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	25	989
Payments for the redemption of long-term debt	(210)	(717)
Notes payable to affiliated companies	248
Distributions to parent		(75)
Other	9	(1)
Net cash provided by financing activities	72	196
Net decrease in cash, cash equivalents and restricted cash	(35)	(19)
Cash, cash equivalents and restricted cash at beginning of period	75	53
Cash, cash equivalents and restricted cash at end of period	40	34
Significant non-cash transactions:
Accrued capital expenditures	218	180
Duke Energy Ohio [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	190	121
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	202	199
Equity component of AFUDC	(9)	(10)
Losses on sales of other assets		106
Deferred income taxes	68	9
Accrued pension and other post-retirement benefit costs	1	3
Contributions to qualified pension plans	(2)
Payments for asset retirement obligations	(7)	(3)
Provision for rate refunds	5	23
(Increase) decrease in
Receivables	24	(44)
Receivable from affiliated companies	51	62
Inventory	(2)	(2)
Other current assets	(15)	12
Increase (decrease) in
Accounts payable	(40)	(47)
Accounts payable to affiliated companies	(9)	(8)
Taxes accrued	(40)	(31)
Other current liabilities	(4)	19
Other assets	(10)	3
Other liabilities	(25)	(17)
Net cash provided by operating activities	378	395
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(714)	(588)
Notes receivable from affiliated companies	(74)	14
Other	(45)	(62)
Net cash used in investing activities	(833)	(636)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,003
Payments for the redemption of long-term debt	(451)	(3)
Notes payable to affiliated companies	(107)	239
Net cash provided by financing activities	445	236
Net decrease in cash, cash equivalents and restricted cash	(10)	(5)
Cash, cash equivalents and restricted cash at beginning of period	21	12
Cash, cash equivalents and restricted cash at end of period	11	7
Significant non-cash transactions:
Accrued capital expenditures	100	83
Non-cash equity contribution from parent		106
Duke Energy Indiana [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	363	317
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	395	388
Equity component of AFUDC	(13)	(28)
Impairment charges		30
Deferred income taxes	108	94
Accrued pension and other post-retirement benefit costs	3	5
Contributions to qualified pension plans	(2)	(8)
Payments for asset retirement obligations	(31)	(49)
Provision for rate refunds		58
(Increase) decrease in
Receivables	1	1
Receivable from affiliated companies	37	27
Inventory	(56)	16
Other current assets	91	(59)
Increase (decrease) in
Accounts payable	1	28
Accounts payable to affiliated companies	(9)	(6)
Taxes accrued	(14)	(51)
Other current liabilities	(12)	6
Other assets	(73)	29
Other liabilities	62	(13)
Net cash provided by operating activities	851	785
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(663)	(619)
Purchases of debt and equity securities	(19)	(42)
Proceeds from sales and maturities of debt and equity securities	15	18
Notes receivable from affiliated companies	(213)
Other	(33)	3
Net cash used in investing activities	(913)	(640)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	485
Payments for the redemption of long-term debt	(60)	(1)
Notes payable to affiliated companies	(167)	40
Distributions to parent	(200)	(175)
Other		(1)
Net cash provided by financing activities	58	(137)
Net decrease in cash, cash equivalents and restricted cash	(4)	8
Cash, cash equivalents and restricted cash at beginning of period	24	9
Cash, cash equivalents and restricted cash at end of period	20	17
Significant non-cash transactions:
Accrued capital expenditures	82	71
Piedmont Natural Gas [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (attributable to parent)	97	81
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	129	120
Deferred income taxes	110	2
Equity in earnings of unconsolidated affiliates	(6)	(6)
Accrued pension and other post-retirement benefit costs	(7)	(3)
Contributions to qualified pension plans	(1)
Provision for rate refunds	9	31
(Increase) decrease in
Receivables	192	192
Receivable from affiliated companies	12	(3)
Inventory	23	16
Other current assets	(95)	58
Increase (decrease) in
Accounts payable	(93)	(48)
Accounts payable to affiliated companies	12	14
Taxes accrued	(51)	11
Other current liabilities	(6)	8
Other assets	(4)	(4)
Other liabilities	(4)	(5)
Net cash provided by operating activities	317	464
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(751)	(497)
Contributions to equity method investments	(16)
Notes receivable from affiliated companies		(11)
Other	(10)	(5)
Net cash used in investing activities	(777)	(513)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	596	100
Payments for the redemption of long-term debt	(350)
Notes payable to affiliated companies	64	(364)
Capital contributions from parent	150	300
Net cash provided by financing activities	460	36
Net decrease in cash, cash equivalents and restricted cash		(13)
Cash, cash equivalents and restricted cash at beginning of period		19
Cash, cash equivalents and restricted cash at end of period		6
Significant non-cash transactions:
Accrued capital expenditures	$ 121	$ 89

The cash outflow associated with the payment for the disposal of other assets.

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Amount of cash paid during the period to settle an asset retirement obligation. Amounts paid to settle an asset retirement obligation are generally included in the operating section of the Statement of Cash Flows.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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