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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net income | $ 3,571 | $ 2,644 | $ 3,064
Net Income Attributable to Parent | 3,748 | 2,666 | 3,059
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 5,176 | 4,696 | 4,046
Equity component of AFUDC | (139) | (221) | (237)
Losses (Gains) on sales of other assets | 4 | 88 | (33)
Impairment charges | (8) | 402 | 282
Deferred income taxes | 806 | 1,079 | 1,433
Equity in earnings of unconsolidated affiliates | (162) | (83) | (119)
Accrued pension and other post-retirement benefit costs | 24 | 61 | 8
Contributions to qualified pension plans | (77) | (141) | (19)
Payments for asset retirement obligations | (746) | (533) | (571)
Payment for the disposal of other assets |  | (105) |
Provision for rate refunds | 60 | 425 |
Refund of AMT credit carryforwards | 573 |  |
(Increase) decrease in |  |  |
Net realized and unrealized mark-to-market and hedging transactions | (48) | 22 | 18
Receivables | 78 | (345) | (83)
Inventory | (122) | 156 | 268
Other current assets | 10 | (721) | (400)
Increase (decrease) in |  |  |
Accounts payable | (164) | 479 | (204)
Taxes accrued | (224) | 23 | 149
Other current liabilities | 172 | 270 | (482)
Other assets | (520) | (971) | (436)
Other liabilities | (55) | (39) | (60)
Net cash provided by (used in) operating activities | 8,209 | 7,186 | 6,624
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (11,122) | (9,389) | (8,052)
Contributions to equity method investments | (324) | (416) | (414)
Return of investment capital | 11 | 137 | 281
Purchases of debt and equity securities | (3,348) | (3,762) | (4,071)
Proceeds from sales and maturities of debt and equity securities | 3,343 | 3,747 | 4,098
Other | (517) | (377) | (284)
Net cash used in investing activities | (11,957) | (10,060) | (8,442)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 7,091 | 5,299 | 6,909
Net proceeds from Issuance of Preferred Stock and Preference Stock | 1,962 |  |
Proceeds from Issuance of Common Stock | 384 | 1,838 |
Payments for the redemption of long-term debt | (3,476) | (2,906) | (2,316)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days | 397 | 472 | 319
Payments for the redemption of short-term debt with original maturities greater than 90 days | (479) | (282) | (272)
Notes payable and commercial paper | (298) | 981 | (409)
Contributions from noncontrolling interests | 843 | 41 |
Dividends paid | (2,668) | (2,471) | (2,450)
Other | (26) | (12) | 1
Net cash provided by financing activities | 3,730 | 2,960 | 1,782
Net (decrease) increase in cash, cash equivalents, and restricted cash | (18) | 86 | (36)
Cash, cash equivalents, and restricted cash at beginning of period | 591 | 505 | 541
Cash, cash equivalents, and restricted cash at end of period | 573 | 591 | 505
Cash and cash equivalents at beginning of period | 442 |  |
Cash and cash equivalents at end of period | 311 | 442 |
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 2,195 | 2,086 | 1,963
Cash (received from) paid for income taxes | (651) | (266) | 4
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 1,356 | 1,112 | 1,032
Non-cash dividends | 108 | 107 |
Duke Energy Carolinas |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 1,403 | 1,071 | 1,214
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 1,671 | 1,487 | 1,409
Equity component of AFUDC | (42) | (73) | (106)
Losses (Gains) on sales of other assets |  | 1 | (1)
Impairment charges | 17 | 192 |
Deferred income taxes | 133 | 305 | 410
Accrued pension and other post-retirement benefit costs | (5) | 4 | (4)
Contributions to qualified pension plans | (7) | (46) |
Payments for asset retirement obligations | (278) | (230) | (271)
Provision for rate refunds | 36 | 182 |
(Increase) decrease in |  |  |
Net realized and unrealized mark-to-market and hedging transactions | (8) | 2 | 9
Receivables | (21) | (86) | (9)
Receivables from affiliated companies | 68 | (87) | 68
Inventory | (48) | 25 | 78
Other current assets | (73) | (161) | 7
Increase (decrease) in |  |  |
Accounts payable | (50) | 168 | 23
Accounts payable to affiliated companies | (20) | 21 | (38)
Taxes accrued | (127) | (65) | 86
Other current liabilities | 127 | 89 | (161)
Other assets | (31) | (179) | (49)
Other liabilities | (36) | (90) | (31)
Net cash provided by (used in) operating activities | 2,709 | 2,530 | 2,634
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (2,714) | (2,706) | (2,524)
Purchases of debt and equity securities | (1,658) | (1,810) | (2,124)
Proceeds from sales and maturities of debt and equity securities | 1,658 | 1,810 | 2,128
Notes receivable from affiliated companies |  |  | 66
Other | (204) | (147) | (109)
Net cash used in investing activities | (2,918) | (2,853) | (2,563)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 886 | 1,983 | 569
Payments for the redemption of long-term debt | (6) | (1,205) | (116)
Notes payable to affiliated companies | (410) | 335 | 104
Distributions to parent | (275) | (750) | (625)
Other | (1) | (23) | (1)
Net cash provided by financing activities | 194 | 340 | (69)
Net (decrease) increase in cash and cash equivalents | (15) | 17 | 2
Cash and cash equivalents at beginning of period | 33 | 16 | 14
Cash and cash equivalents at end of period | 18 | 33 | 16
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 433 | 452 | 398
Cash (received from) paid for income taxes | 122 | 89 | 193
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 347 | 302 | 315
Progress Energy |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net income | 1,327 | 1,033 | 1,268
Net Income Attributable to Parent | 1,327 | 1,027 | 1,258
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 2,207 | 1,987 | 1,516
Equity component of AFUDC | (66) | (104) | (92)
Losses (Gains) on sales of other assets |  | (24) | (28)
Impairment charges | (24) | 87 | 156
Deferred income taxes | 433 | 358 | 703
Accrued pension and other post-retirement benefit costs | 20 | 24 | (28)
Contributions to qualified pension plans | (57) | (45) |
Payments for asset retirement obligations | (412) | (230) | (248)
Provision for rate refunds | 15 | 122 |
(Increase) decrease in |  |  |
Net realized and unrealized mark-to-market and hedging transactions | (34) | 18 |
Receivables | 47 | (207) | (89)
Receivables from affiliated companies | 81 | (137) | 71
Inventory | 62 | 121 | 125
Other current assets | 184 | (12) | (397)
Increase (decrease) in |  |  |
Accounts payable | (4) | 217 | (260)
Accounts payable to affiliated companies | (50) | 109 | (97)
Taxes accrued | (74) | 8 | 17
Other current liabilities | 25 | 129 | (166)
Other assets | (336) | (876) | (300)
Other liabilities | (135) | (34) | (98)
Net cash provided by (used in) operating activities | 3,209 | 2,544 | 2,053
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (3,952) | (3,854) | (3,152)
Purchases of debt and equity securities | (1,511) | (1,753) | (1,806)
Proceeds from sales and maturities of debt and equity securities | 1,504 | 1,769 | 1,824
Notes receivable from affiliated companies | (164) | 240 | (160)
Other | (190) | (162) | (59)
Net cash used in investing activities | (4,313) | (3,760) | (3,353)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 2,187 | 1,833 | 2,118
Payments for the redemption of long-term debt | (1,667) | (771) | (813)
Notes payable to affiliated companies | 586 | 430 | 100
Dividends to parent |  | (250) | (124)
Other | 12 | (1) | (4)
Net cash provided by financing activities | 1,118 | 1,241 | 1,277
Net (decrease) increase in cash, cash equivalents, and restricted cash | 14 | 25 | (23)
Cash, cash equivalents, and restricted cash at beginning of period | 112 | 87 | 110
Cash, cash equivalents, and restricted cash at end of period | 126 | 112 | 87
Cash and cash equivalents at beginning of period | 67 |  |
Cash and cash equivalents at end of period | 48 | 67 |
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 892 | 798 | 773
Cash (received from) paid for income taxes | (79) | (348) | (146)
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 447 | 478 | 391
Equitization of certain notes payable to affiliates |  |  | 1,047
Dividend to parent related to a legal entity restructuring |  |  | 547
Duke Energy Progress |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 805 | 667 | 715
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 1,329 | 1,183 | 936
Equity component of AFUDC | (60) | (57) | (47)
Losses (Gains) on sales of other assets |  | (9) | (5)
Impairment charges | 12 | 33 | 19
Deferred income taxes | 197 | 236 | 384
Accrued pension and other post-retirement benefit costs | 4 | 15 | (20)
Contributions to qualified pension plans | (3) | (25) |
Payments for asset retirement obligations | (390) | (195) | (192)
Provision for rate refunds | 12 | 122 |
(Increase) decrease in |  |  |
Net realized and unrealized mark-to-market and hedging transactions | (6) | 5 | (4)
Receivables | 21 | (107) | (58)
Receivables from affiliated companies | (29) | (20) | 2
Inventory | 20 | 63 | 59
Other current assets | 101 | (201) | (75)
Increase (decrease) in |  |  |
Accounts payable | 32 | 219 | (230)
Accounts payable to affiliated companies | (75) | 99 | (48)
Taxes accrued | (46) | (11) | (39)
Other current liabilities | 68 | 46 | (131)
Other assets | (198) | (447) | (53)
Other liabilities | 29 | 12 | (18)
Net cash provided by (used in) operating activities | 1,823 | 1,628 | 1,195
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (2,108) | (2,220) | (1,715)
Purchases of debt and equity securities | (842) | (1,236) | (1,249)
Proceeds from sales and maturities of debt and equity securities | 810 | 1,206 | 1,207
Notes receivable from affiliated companies |  |  | 165
Other | (119) | (95) | (51)
Net cash used in investing activities | (2,259) | (2,345) | (1,643)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 1,269 | 845 | 812
Payments for the redemption of long-term debt | (605) | (3) | (470)
Notes payable to affiliated companies | (228) | 54 | 240
Distributions to parent |  | (175) | (124)
Other | (1) | (1) | (1)
Net cash provided by financing activities | 435 | 720 | 457
Net (decrease) increase in cash and cash equivalents | (1) | 3 | 9
Cash and cash equivalents at beginning of period | 23 | 20 | 11
Cash and cash equivalents at end of period | 22 | 23 | 20
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 331 | 303 | 291
Cash (received from) paid for income taxes | (30) | (112) | 59
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 175 | 220 | 191
Duke Energy Florida |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 692 | 554 | 712
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 869 | 793 | 570
Equity component of AFUDC | (6) | (47) | (45)
Losses (Gains) on sales of other assets |  | (1) | (1)
Impairment charges | (36) | 54 | 138
Deferred income taxes | 180 | 159 | 245
Accrued pension and other post-retirement benefit costs | 11 | 5 | (13)
Contributions to qualified pension plans | (53) | (20) |
Payments for asset retirement obligations | (22) | (35) | (56)
(Increase) decrease in |  |  |
Net realized and unrealized mark-to-market and hedging transactions | (33) | 7 | 5
Receivables | 26 | (100) | (38)
Receivables from affiliated companies | 17 | (26) |
Inventory | 42 | 58 | 66
Other current assets | 156 | 59 | (138)
Increase (decrease) in |  |  |
Accounts payable | (36) | (1) | (32)
Accounts payable to affiliated companies | 40 | 17 | (51)
Taxes accrued | (31) | 40 | 1
Other current liabilities | (36) | 82 | (37)
Other assets | (135) | (428) | (229)
Other liabilities | (167) | (61) | (82)
Net cash provided by (used in) operating activities | 1,478 | 1,109 | 1,015
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (1,844) | (1,634) | (1,437)
Purchases of debt and equity securities | (669) | (517) | (557)
Proceeds from sales and maturities of debt and equity securities | 695 | 563 | 617
Notes receivable from affiliated companies | (173) | 313 | (313)
Other | (67) | (65) | (7)
Net cash used in investing activities | (2,058) | (1,340) | (1,697)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 918 | 988 | 1,306
Payments for the redemption of long-term debt | (262) | (769) | (342)
Notes payable to affiliated companies | (108) | 108 | (297)
Distributions to parent |  | (75) |
Other | 13 | 1 | (1)
Net cash provided by financing activities | 561 | 253 | 666
Net (decrease) increase in cash, cash equivalents, and restricted cash | (19) | 22 | (16)
Cash, cash equivalents, and restricted cash at beginning of period | 75 | 53 | 69
Cash, cash equivalents, and restricted cash at end of period | 56 | 75 | 53
Cash and cash equivalents at beginning of period | 36 |  |
Cash and cash equivalents at end of period | 17 | 36 |
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 332 | 270 | 274
Cash (received from) paid for income taxes | 1 | (120) | (197)
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 272 | 258 | 199
Duke Energy Ohio |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 238 | 176 | 192
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 269 | 271 | 265
Equity component of AFUDC | (13) | (11) | (11)
Losses (Gains) on sales of other assets |  | 106 | (1)
Impairment charges |  |  | 1
Deferred income taxes | 81 | 25 | 90
Accrued pension and other post-retirement benefit costs | 2 | 3 | 2
Contributions to qualified pension plans | (2) |  | (4)
Payments for asset retirement obligations | (8) | (3) | (7)
Provision for rate refunds | 7 | 24 |
(Increase) decrease in |  |  |
Receivables | 20 | (33) | 2
Receivables from affiliated companies | 22 | 19 | (4)
Inventory | (9) | 7 | 6
Other current assets | (5) | 16 | (22)
Increase (decrease) in |  |  |
Accounts payable | (17) | (19) | 12
Accounts payable to affiliated companies | (10) | 16 | (1)
Taxes accrued | 17 | 12 | 11
Other current liabilities | 1 | 14 | (19)
Other assets | (22) | (26) | (28)
Other liabilities | (45) | (27) | (5)
Net cash provided by (used in) operating activities | 526 | 570 | 479
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (952) | (827) | (686)
Notes receivable from affiliated companies |  | 14 | 80
Other | (68) | (89) | (41)
Net cash used in investing activities | (1,020) | (902) | (647)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 1,003 | 99 | 182
Payments for the redemption of long-term debt | (551) | (3) | (2)
Notes payable to affiliated companies | 38 | 245 | 13
Dividends to parent |  |  | (25)
Other |  |  | (1)
Net cash provided by financing activities | 490 | 341 | 167
Net (decrease) increase in cash and cash equivalents | (4) | 9 | (1)
Cash and cash equivalents at beginning of period | 21 | 12 | 13
Cash and cash equivalents at end of period | 17 | 21 | 12
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 97 | 87 | 85
Cash (received from) paid for income taxes | (37) | (6) | (8)
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 109 | 95 | 82
Transfer of ownership interest of certain equity method investees to parent |  | 106 |
Duke Energy Indiana |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 436 | 393 | 354
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 531 | 524 | 462
Equity component of AFUDC | (18) | (32) | (28)
Impairment charges |  | 30 | 18
Deferred income taxes | 156 | 95 | 152
Accrued pension and other post-retirement benefit costs | 6 | 7 | 2
Contributions to qualified pension plans | (2) | (8) |
Payments for asset retirement obligations | (48) | (69) | (45)
Provision for rate refunds |  | 53 |
(Increase) decrease in |  |  |
Receivables | (8) | 7 | 59
Receivables from affiliated companies | 41 | 3 | (11)
Inventory | (95) | 28 | 54
Other current assets | 76 | (25) | 28
Increase (decrease) in |  |  |
Accounts payable | (10) | 37 | (86)
Accounts payable to affiliated companies | 4 | 5 | 4
Taxes accrued | (25) | (52) | 64
Other current liabilities | 15 | 14 | (10)
Other assets | (71) | 29 | (28)
Other liabilities | 9 | (33) | (20)
Net cash provided by (used in) operating activities | 997 | 1,006 | 969
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (876) | (832) | (840)
Purchases of debt and equity securities | (26) | (48) | (20)
Proceeds from sales and maturities of debt and equity securities | 20 | 44 | 7
Notes receivable from affiliated companies |  |  | 86
Other | (49) | 18 | (65)
Net cash used in investing activities | (931) | (818) | (832)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 485 |  |
Payments for the redemption of long-term debt | (213) | (3) | (5)
Notes payable to affiliated companies | (137) | 6 | 161
Distributions to parent | (200) | (175) | (300)
Other |  | (1) | (1)
Net cash provided by financing activities | (65) | (173) | (145)
Net (decrease) increase in cash and cash equivalents | 1 | 15 | (8)
Cash and cash equivalents at beginning of period | 24 | 9 | 17
Cash and cash equivalents at end of period | 25 | 24 | 9
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 150 | 162 | 179
Cash (received from) paid for income taxes | (6) | 75 | 117
Significant non-cash transactions: |  |  |
Accrued capital expenditures | 102 | 88 | 125
Piedmont |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] |  |  |
Net Income Attributable to Parent | 202 | 129 | 139
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization and accretion (including amortization of nuclear fuel) | 174 | 161 | 151
Impairment charges |  |  | 7
Deferred income taxes | 136 | (31) | 154
Equity in earnings of unconsolidated affiliates | (8) | (7) | 6
Accrued pension and other post-retirement benefit costs | (9) | (4) | 23
Contributions to qualified pension plans | (1) |  | (11)
Provision for rate refunds | 2 | 43 |
(Increase) decrease in |  |  |
Receivables | 28 | 7 | (40)
Receivables from affiliated companies | 12 | (15) |
Inventory | (2) | (4) |
Other current assets | (25) | 71 | (20)
Increase (decrease) in |  |  |
Accounts payable | (7) | 15 | (13)
Accounts payable to affiliated companies | (35) | 25 | 5
Taxes accrued | (60) | 65 | (48)
Other current liabilities | 1 | 21 | (9)
Other assets | 9 | 6 | 7
Other liabilities | (8) | (4) | (2)
Net cash provided by (used in) operating activities | 409 | 478 | 349
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Capital expenditures | (1,053) | (721) | (585)
Contributions to equity method investments | (16) |  | (12)
Return of investment capital | 4 | 3 | 2
Other | (14) | (10) | (6)
Net cash used in investing activities | (1,083) | (731) | (603)
CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] |  |  |
Proceeds from the issuance of long-term debt | 596 | 100 | 250
Payments for the redemption of long-term debt | (350) |  | (35)
Notes payable and commercial paper |  |  | (330)
Notes payable to affiliated companies | 278 | (166) | 364
Contribution from parent | 150 | 300 |
Other |  |  | (1)
Net cash provided by financing activities | 674 | 234 | 248
Net (decrease) increase in cash and cash equivalents |  | (19) | (6)
Cash and cash equivalents at beginning of period |  | 19 | 25
Cash and cash equivalents at end of period |  |  | 19
Supplemental Disclosures: |  |  |
Cash paid for interest, net of amount capitalized | 84 | 79 | 78
Cash (received from) paid for income taxes | (31) | (16) | (12)
Significant non-cash transactions: |  |  |
Accrued capital expenditures | $ 109 | $ 96 | 34
Transfer of ownership interest of certain equity method investees to parent |  |  | $ 149

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