XML 46 R6.htm IDEA: XBRL DOCUMENT
v3.24.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Operating Activities |  |
Net Income (Loss) | $ 1,348.2 | $ 916.5
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 1,609.0 | 1,517.1
Deferred Income Taxes | (56.1) | 135.8
Asset Impairments and Other Related Charges | 142.5 | 0.0
Loss on the Sale of the Competitive Contracted Renewables Portfolio | 142.5 | 0.0
Allowance for Equity Funds Used During Construction | (98.8) | (72.3)
Mark-to-Market of Risk Management Contracts | (75.0) | (124.7)
Property Taxes | 213.2 | 202.7
Deferred Fuel Over/Under-Recovery, Net | 120.0 | 342.5
Change in Other Noncurrent Assets | (131.0) | (375.5)
Change in Other Noncurrent Liabilities | 189.9 | (55.4)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (209.3) | 277.8
Fuel, Materials and Supplies | 111.3 | (315.1)
Accounts Payable | 77.0 | 62.6
Accrued Taxes, Net | (301.3) | (433.7)
Other Current Assets | (144.0) | (76.6)
Other Current Liabilities | 108.6 | (232.1)
Net Cash Flows from (Used for) Operating Activities | 2,904.2 | 1,881.6
Investing Activities |  |
Construction Expenditures | (3,318.3) | (4,049.7)
Purchases of Investment Securities | (1,190.1) | (1,235.6)
Sales of Investment Securities | 1,157.1 | 1,206.3
Acquisitions of Nuclear Fuel | (69.8) | (73.9)
Proceeds from Sale of Equity Method Investments | 114.0 | 0.0
Other Investing Activities | 57.4 | 33.1
Net Cash Flows from (Used for) Investing Activities | (3,249.7) | (4,265.5)
Financing Activities |  |
Issuance of Common Stock | 475.8 | 77.6
Issuance of Long-term Debt | 3,663.3 | 3,958.8
Issuance of Short-term Debt with Original Maturities greater than 90 Days | 376.6 | 597.4
Change in Short-term Debt with Original Maturities less than 90 Days, Net | (860.0) | (688.2)
Retirement of Long-term Debt | (1,769.1) | (641.7)
Redemption of Short-term Debt with Original Maturities Greater than 90 Days | (665.1) | (153.8)
Principal Payments for Finance Leases Obligations | (35.8) | (40.6)
Dividends Paid on Common Stock | (936.0) | (863.6)
Other Financing Activities | (35.3) | (67.8)
Net Cash Flows from (Used for) Financing Activities | 214.4 | 2,178.1
Net Increase (Decrease) in Cash and Cash Equivalents | (131.1) | (205.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period | 379.0 | 556.5
Cash and Cash Equivalents at Beginning of Period | 330.1 |
Cash, Cash Equivalents and Restricted Cash at End of Period | 247.9 | 350.7
Cash and Cash Equivalents at End of Period | 202.5 |
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 881.0 | 773.5
Net Cash Paid (Received) for Income Taxes | 60.8 | 9.9
Cash Paid (Received) for Transferable Tax Credits | (72.2) | 0.0
Noncash Acquisitions Under Finance Leases | 20.5 | 25.6
Construction Expenditures Included in Current Liabilities as of June 30, | 1,049.9 | 966.6
Acquisition of Nuclear Fuel Included in Current Liabilities as of June 30, | 8.2 | (36.0)
Renewable Energy Facilities |  |
Investing Activities |  |
Acquisitions of Renewable Energy Facilities | 0.0 | (145.7)
Competitive Contracted Renewable Portfolio |  |
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Loss on the Sale of the Competitive Contracted Renewables Portfolio | 0.0 | 112.0
Competitive Contracted Renewable Portfolio |  |
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Loss on the Sale of the Competitive Contracted Renewables Portfolio | 0.0 | 112.0
AEP Texas Inc. [Member] |  |
Operating Activities |  |
Net Income (Loss) | 208.1 | 156.7
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 241.6 | 225.9
Deferred Income Taxes | 45.1 | 28.5
Allowance for Equity Funds Used During Construction | (24.1) | (11.6)
Mark-to-Market of Risk Management Contracts | 0.0 | 0.4
Property Taxes | (53.5) | (60.0)
Change in Other Noncurrent Assets | (57.0) | (89.7)
Change in Other Noncurrent Liabilities | 19.7 | 7.8
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (73.1) | (33.1)
Fuel, Materials and Supplies | 5.0 | (18.5)
Accounts Payable | 26.0 | 1.9
Accrued Taxes, Net | 43.6 | 50.2
Other Current Assets | 0.0 | 2.9
Other Current Liabilities | 4.7 | (34.4)
Net Cash Flows from (Used for) Operating Activities | 386.1 | 227.0
Investing Activities |  |
Construction Expenditures | (665.3) | (834.2)
Change in Advances to Affiliates, Net | (251.1) | 0.0
Other Investing Activities | 32.8 | 20.2
Net Cash Flows from (Used for) Investing Activities | (883.6) | (814.0)
Financing Activities |  |
Capital Contributions from Parent | 1.6 | 275.3
Return of Capital to Parent | 0.0 | (4.3)
Issuance of Long-term Debt | 841.9 | 445.9
Change in Advances from Affiliates, Net | (103.7) | 39.4
Retirement of Long-term Debt | (244.5) | (168.2)
Principal Payments for Finance Leases Obligations | (3.7) | (3.7)
Other Financing Activities | 1.3 | 0.6
Net Cash Flows from (Used for) Financing Activities | 492.9 | 585.0
Net Increase (Decrease) in Cash and Cash Equivalents | (4.6) | (2.0)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period | 34.1 | 32.8
Cash and Cash Equivalents at Beginning of Period | 0.1 |
Cash, Cash Equivalents and Restricted Cash at End of Period | 29.5 | 30.8
Cash and Cash Equivalents at End of Period | 0.1 |
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 111.0 | 108.3
Net Cash Paid (Received) for Income Taxes | (5.4) | 0.7
Noncash Acquisitions Under Finance Leases | 2.1 | 2.6
Construction Expenditures Included in Current Liabilities as of June 30, | 191.3 | 147.2
AEP Transmission Co [Member] |  |
Operating Activities |  |
Net Income (Loss) | 356.9 | 338.4
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 212.6 | 191.6
Deferred Income Taxes | 49.4 | 42.7
Allowance for Equity Funds Used During Construction | (40.4) | (39.5)
Property Taxes | 116.2 | 110.7
Provision for Refund Affiliated | 22.6 | 13.1
Change in Other Noncurrent Assets | 0.0 | 3.4
Change in Other Noncurrent Liabilities | (28.9) | 1.7
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (23.8) | (104.1)
Fuel, Materials and Supplies | (0.2) | (4.8)
Accounts Payable | (6.5) | 64.6
Accrued Taxes, Net | (65.3) | (133.3)
Other Current Assets | 0.5 | 1.3
Other Current Liabilities | 2.6 | 10.2
Net Cash Flows from (Used for) Operating Activities | 573.1 | 482.9
Investing Activities |  |
Construction Expenditures | (657.8) | (876.1)
Change in Advances to Affiliates, Net | (208.1) | (75.0)
Other Investing Activities | 11.3 | 2.6
Net Cash Flows from (Used for) Investing Activities | (854.6) | (948.5)
Financing Activities |  |
Capital Contributions from Parent | 34.6 | 25.0
Return of Capital to Parent | 0.0 | (8.6)
Issuance of Long-term Debt | 445.7 | 689.1
Change in Advances from Affiliates, Net | (127.8) | (154.9)
Dividends Paid on Common Stock | (71.0) | (85.0)
Net Cash Flows from (Used for) Financing Activities | 281.5 | 465.6
Net Increase (Decrease) in Cash and Cash Equivalents | 0.0 | 0.0
Cash and Cash Equivalents at Beginning of Period | 0.0 | 0.0
Cash and Cash Equivalents at End of Period | 0.0 | 0.0
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 96.9 | 82.8
Net Cash Paid (Received) for Income Taxes | (12.5) | 32.0
Construction Expenditures Included in Current Liabilities as of June 30, | 237.9 | 238.4
Appalachian Power Co [Member] |  |
Operating Activities |  |
Net Income (Loss) | 194.8 | 155.4
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 295.5 | 281.1
Deferred Income Taxes | (27.4) | (2.8)
Allowance for Equity Funds Used During Construction | (7.2) | (5.1)
Mark-to-Market of Risk Management Contracts | (54.4) | 27.4
Deferred Fuel Over/Under-Recovery, Net | 81.2 | 54.2
Change in Other Noncurrent Assets | 0.5 | 7.7
Change in Other Noncurrent Liabilities | 5.9 | (39.3)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (32.2) | 60.4
Fuel, Materials and Supplies | 45.4 | (113.4)
Increase (Decrease) in Margin Deposits Outstanding | (12.4) | (11.7)
Accounts Payable | 66.4 | (128.7)
Accrued Taxes, Net | 41.6 | 13.4
Other Current Assets | 2.3 | 5.1
Other Current Liabilities | 10.8 | (20.8)
Net Cash Flows from (Used for) Operating Activities | 610.8 | 282.9
Investing Activities |  |
Construction Expenditures | (443.5) | (558.2)
Change in Advances to Affiliates, Net | (23.6) | 0.9
Other Investing Activities | 9.1 | 2.7
Net Cash Flows from (Used for) Investing Activities | (458.0) | (554.6)
Financing Activities |  |
Capital Contributions from Parent | 109.5 | 4.3
Issuance of Long-term Debt | 480.8 | 200.0
Change in Advances from Affiliates, Net | (339.6) | 83.9
Retirement of Long-term Debt | (399.5) | (13.0)
Principal Payments for Finance Leases Obligations | (4.4) | (4.1)
Other Financing Activities | 0.4 | 0.6
Net Cash Flows from (Used for) Financing Activities | (152.8) | 271.7
Net Increase (Decrease) in Cash and Cash Equivalents | 0.0 | 0.0
Cash, Cash Equivalents and Restricted Cash at Beginning of Period | 19.9 | 21.9
Cash and Cash Equivalents at Beginning of Period | 5.0 |
Cash, Cash Equivalents and Restricted Cash at End of Period | 19.9 | 21.9
Cash and Cash Equivalents at End of Period | 4.0 |
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 126.6 | 125.9
Net Cash Paid (Received) for Income Taxes | 9.6 | 23.4
Cash Paid (Received) for Transferable Tax Credits | (0.1) | 0.0
Noncash Acquisitions Under Finance Leases | 0.7 | 1.7
Construction Expenditures Included in Current Liabilities as of June 30, | 143.7 | 139.6
Indiana Michigan Power Co [Member] |  |
Operating Activities |  |
Net Income (Loss) | 180.2 | 177.6
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 226.6 | 236.2
Deferred Income Taxes | (69.8) | (1.9)
Asset Impairments and Other Related Charges | 13.4 | 0.0
Loss on the Sale of the Competitive Contracted Renewables Portfolio | 13.4 | 0.0
Amortization (Deferral) of Incremental Nuclear Refueling Outage Expenses, Net | (20.5) | 36.7
Allowance for Equity Funds Used During Construction | (6.7) | (2.8)
Mark-to-Market of Risk Management Contracts | 9.5 | (13.7)
Amortization of Nuclear Fuel | 46.1 | 50.2
Deferred Fuel Over/Under-Recovery, Net | (9.5) | 29.6
Change in Other Noncurrent Assets | 10.2 | (7.0)
Change in Other Noncurrent Liabilities | 29.3 | (4.6)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (0.1) | 37.3
Fuel, Materials and Supplies | 8.6 | (52.7)
Accounts Payable | (7.5) | (25.2)
Accrued Taxes, Net | 36.1 | (3.0)
Other Current Assets | (8.8) | (3.6)
Other Current Liabilities | (10.8) | (23.4)
Net Cash Flows from (Used for) Operating Activities | 426.3 | 429.7
Investing Activities |  |
Construction Expenditures | (275.0) | (267.1)
Change in Advances to Affiliates, Net | 0.0 | (17.5)
Purchases of Investment Securities | (1,187.1) | (1,233.3)
Sales of Investment Securities | 1,154.1 | 1,206.3
Acquisitions of Nuclear Fuel | (69.8) | (1.9)
Other Investing Activities | 3.7 | 3.3
Net Cash Flows from (Used for) Investing Activities | (374.1) | (310.2)
Financing Activities |  |
Capital Contributions from Parent | 5.0 | 0.1
Issuance of Long-term Debt | 80.4 | 494.9
Change in Advances from Affiliates, Net | (10.7) | (249.9)
Retirement of Long-term Debt | (48.6) | (299.2)
Principal Payments for Finance Leases Obligations | (3.6) | (3.8)
Dividends Paid on Common Stock | (75.0) | (62.5)
Other Financing Activities | 0.6 | 0.5
Net Cash Flows from (Used for) Financing Activities | (51.9) | (119.9)
Net Increase (Decrease) in Cash and Cash Equivalents | 0.3 | (0.4)
Cash and Cash Equivalents at Beginning of Period | 2.1 | 4.2
Cash and Cash Equivalents at End of Period | 2.4 | 3.8
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 72.8 | 62.1
Net Cash Paid (Received) for Income Taxes | (14.5) | 13.8
Noncash Acquisitions Under Finance Leases | 1.0 | 3.2
Construction Expenditures Included in Current Liabilities as of June 30, | 86.2 | 78.1
Acquisition of Nuclear Fuel Included in Current Liabilities as of June 30, | 8.2 | 36.0
Ohio Power Co [Member] |  |
Operating Activities |  |
Net Income (Loss) | 89.0 | 145.7
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 207.8 | 143.4
Deferred Income Taxes | (10.2) | 7.1
Asset Impairments and Other Related Charges | 52.9 | 0.0
Loss on the Sale of the Competitive Contracted Renewables Portfolio | 52.9 | 0.0
Allowance for Equity Funds Used During Construction | (9.8) | (5.7)
Mark-to-Market of Risk Management Contracts | (7.5) | 14.3
Property Taxes | 190.8 | 193.9
Change in Other Noncurrent Assets | 4.8 | (88.0)
Change in Other Noncurrent Liabilities | 18.4 | (37.7)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (80.4) | 8.2
Fuel, Materials and Supplies | 9.7 | (2.5)
Accounts Payable | (47.2) | 30.8
Customer Deposits | 39.0 | (37.0)
Accrued Taxes, Net | (207.1) | (289.9)
Other Current Assets | (4.9) | 2.3
Other Current Liabilities | 11.1 | (15.3)
Net Cash Flows from (Used for) Operating Activities | 256.4 | 69.6
Investing Activities |  |
Construction Expenditures | (455.8) | (547.7)
Change in Advances to Affiliates, Net | (49.9) | 0.0
Other Investing Activities | 15.3 | 11.1
Net Cash Flows from (Used for) Investing Activities | (490.4) | (536.6)
Financing Activities |  |
Capital Contributions from Parent | 0.0 | 175.0
Issuance of Long-term Debt | 346.3 | 395.1
Change in Advances from Affiliates, Net | (110.5) | (100.6)
Retirement of Long-term Debt | 0.0 | (0.6)
Principal Payments for Finance Leases Obligations | (2.7) | (2.4)
Other Financing Activities | 0.8 | 0.6
Net Cash Flows from (Used for) Financing Activities | 233.9 | 467.1
Net Increase (Decrease) in Cash and Cash Equivalents | (0.1) | 0.1
Cash, Cash Equivalents and Restricted Cash at Beginning of Period | 6.4 | 9.6
Cash and Cash Equivalents at Beginning of Period | 6.4 |
Cash, Cash Equivalents and Restricted Cash at End of Period | 6.3 | 9.7
Cash and Cash Equivalents at End of Period | 6.3 |
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 64.6 | 57.6
Net Cash Paid (Received) for Income Taxes | (13.0) | 9.2
Noncash Acquisitions Under Finance Leases | 0.8 | 2.1
Construction Expenditures Included in Current Liabilities as of June 30, | 112.9 | 87.4
Public Service Co Of Oklahoma [Member] |  |
Operating Activities |  |
Net Income (Loss) | 108.3 | 48.7
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 131.5 | 126.0
Deferred Income Taxes | 8.2 | 13.1
Allowance for Equity Funds Used During Construction | (3.3) | (2.9)
Mark-to-Market of Risk Management Contracts | (37.5) | (19.3)
Property Taxes | (29.7) | (27.9)
Deferred Fuel Over/Under-Recovery, Net | (13.8) | 146.3
Change in Other Regulatory Assets | (4.2) | (57.3)
Change in Other Noncurrent Assets | (13.7) | (22.7)
Change in Other Noncurrent Liabilities | (6.2) | (0.6)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (21.4) | (25.0)
Fuel, Materials and Supplies | (3.7) | (2.6)
Accounts Payable | 109.8 | 75.2
Accrued Taxes, Net | (7.9) | 8.9
Other Current Assets | (27.4) | 5.3
Other Current Liabilities | (52.2) | (8.4)
Net Cash Flows from (Used for) Operating Activities | 136.8 | 256.8
Investing Activities |  |
Construction Expenditures | (270.8) | (263.6)
Other Investing Activities | (2.2) | 1.1
Net Cash Flows from (Used for) Investing Activities | (273.0) | (408.2)
Financing Activities |  |
Capital Contributions from Parent | 0.2 | 0.0
Return of Capital to Parent | 0.0 | (2.5)
Issuance of Long-term Debt | 0.0 | 469.8
Change in Advances from Affiliates, Net | 207.4 | (296.1)
Retirement of Long-term Debt | (0.3) | (0.3)
Principal Payments for Finance Leases Obligations | (1.7) | (1.7)
Dividends Paid on Common Stock | (70.0) | (17.5)
Other Financing Activities | 0.6 | 0.3
Net Cash Flows from (Used for) Financing Activities | 136.2 | 152.0
Net Increase (Decrease) in Cash and Cash Equivalents | 0.0 | 0.6
Cash and Cash Equivalents at Beginning of Period | 2.5 | 4.0
Cash and Cash Equivalents at End of Period | 2.5 | 4.6
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 51.6 | 37.6
Net Cash Paid (Received) for Income Taxes | (3.0) | (6.1)
Cash Paid (Received) for Transferable Tax Credits | (29.6) | 0.0
Noncash Acquisitions Under Finance Leases | 0.8 | 1.2
Construction Expenditures Included in Current Liabilities as of June 30, | 61.8 | 83.6
Public Service Co Of Oklahoma [Member] | Renewable Energy Facilities |  |
Investing Activities |  |
Acquisitions of Renewable Energy Facilities | 0.0 | (145.7)
Southwestern Electric Power Co [Member] |  |
Operating Activities |  |
Net Income (Loss) | 140.5 | 123.1
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Depreciation and Amortization | 179.9 | 166.2
Deferred Income Taxes | (136.2) | 28.0
Allowance for Equity Funds Used During Construction | (6.8) | (3.0)
Mark-to-Market of Risk Management Contracts | (31.1) | (11.1)
Property Taxes | (47.4) | (49.3)
Deferred Fuel Over/Under-Recovery, Net | 82.7 | 103.6
Change in Other Noncurrent Assets | (12.8) | (38.8)
Change in Other Noncurrent Liabilities | (40.1) | (22.4)
Changes in Certain Components of Working Capital: |  |
Accounts Receivable, Net | (43.0) | (4.3)
Fuel, Materials and Supplies | 22.1 | (12.2)
Accounts Payable | 60.2 | 81.2
Accrued Taxes, Net | 19.7 | 39.7
Other Current Assets | (26.0) | 20.5
Other Current Liabilities | (10.8) | (36.5)
Net Cash Flows from (Used for) Operating Activities | 310.9 | 384.7
Investing Activities |  |
Construction Expenditures | (347.7) | (429.6)
Change in Advances to Affiliates, Net | (0.6) | (0.1)
Other Investing Activities | 0.9 | 0.8
Net Cash Flows from (Used for) Investing Activities | (347.4) | (428.9)
Financing Activities |  |
Capital Contributions from Parent | 0.0 | 50.0
Issuance of Long-term Debt | 0.0 | 346.8
Change in Short-term Debt with Original Maturities less than 90 Days, Net | 1.4 | 3.9
Change in Advances from Affiliates, Net | 196.7 | (278.1)
Retirement of Long-term Debt | 0.0 | (94.1)
Principal Payments for Finance Leases Obligations | (9.8) | (16.2)
Dividends Paid on Common Stock | (150.0) | (50.0)
Dividends Paid on Common Stock | (2.4) | (2.1)
Other Financing Activities | 0.6 | 0.2
Net Cash Flows from (Used for) Financing Activities | 36.5 | (39.6)
Net Increase (Decrease) in Cash and Cash Equivalents | 0.0 | (83.8)
Cash and Cash Equivalents at Beginning of Period | 2.4 | 88.4
Cash and Cash Equivalents at End of Period | 2.4 | 4.6
Supplementary Information |  |
Cash Paid for Interest, Net of Capitalized Amounts | 71.6 | 48.7
Net Cash Paid (Received) for Income Taxes | 14.9 | (17.1)
Cash Paid (Received) for Transferable Tax Credits | (25.4) | 0.0
Noncash Acquisitions Under Finance Leases | 1.3 | 2.6
Construction Expenditures Included in Current Liabilities as of June 30, | 93.1 | 85.7
Southwestern Electric Power Co [Member] | Turk AFUDC Refunds [Member] |  |
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows from (Used for) Operating Activities: |  |
Change in Other Noncurrent Liabilities | 133.3 | 0.0
Changes in Certain Components of Working Capital: |  |
Other Current Liabilities | $ 26.7 | $ 0.0

X
- Definition Future cash outflow to pay for acquired nuclear fuel. + References No definition available. + Details
Name: | aep_AcquisitionOfNuclearFuelIncludedInCurrentLiabilities
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The expense charged against earnings for the periodic recognition of nuclear fuel usage. + References No definition available. + Details
Name: | aep_AmortizationOfNuclearFuel
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net cash inflow or outflow due to Cook Unit 1 & 2 refueling outage levelization. + References No definition available. + Details
Name: | aep_DeferralOfIncrementalNuclearRefuelingOutageExpensesNet
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net change during the reporting period in the value of the asset (liability) created by an (over) under recovery of fuel costs. An over recovery represents the excess of fuel revenues billed to customers over fuel costs incurred and an under recovery represents excess fuel costs incurred over fuel revenues billed to customers. + References No definition available. + Details
Name: | aep_FuelOverUnderRecoveryNet
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Provision for Refund-Affiliated + References No definition available. + Details
Name: | aep_ProvisionForRefundAffiliated
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Return of Capital to Parent Cash Flows + References No definition available. + Details
Name: | aep_ReturnOfCapitalToParentCashFlows
Namespace Prefix: | aep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of amortization charged against earnings during the period for deferred property taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 45 -Paragraph 9 -Subparagraph (c) -SubTopic 10 -Topic 270 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482989/270-10-45-9 + Details
Name: | us-gaap_AmortizationOfDeferredPropertyTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-4 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 230 -Topic 830 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481877/830-230-45-1 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 230 -Topic 830 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481877/830-230-45-1 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Future cash outflow to pay for construction in progress expenditures that have occurred. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
Name: | us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
Name: | us-gaap_DeferredIncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-5 + Details
Name: | us-gaap_FinanceLeasePrincipalPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncomeTaxCreditsAndAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
Name: | us-gaap_IncomeTaxesPaidNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInAccountsPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInAccruedTaxesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the period in the amount of customer money held in customer accounts, including security deposits, collateral for a current or future transactions, initial payment of the cost of acquisition or for the right to enter into a contract or agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInCustomerDeposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInInventories
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in money or securities placed with a broker or counterparty as security for a trading or derivative position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInMarginDepositsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount owed by the reporting entry in the form of loans and obligations (generally evidenced by promissory notes) made by the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInNotesPayableRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount owed to the reporting entity in the form of loans and obligations (generally evidenced by promissory notes) made to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInNotesReceivableRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseInOperatingCapitalAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in current assets classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInOtherCurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in current liabilities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in noncurrent assets classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in noncurrent operating liabilities classified as other. + References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the value of other assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInOtherRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-25 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
Name: | us-gaap_InterestPaidNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-25 + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-2 + Details
Name: | us-gaap_OtherAssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow from construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsForConstructionInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash outflow associated with the purchase of any material that is commonly used in the generation of nuclear energy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsForNuclearFuel
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 12 -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsOfDistributionsToAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquireInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from parent as a source of financing that is recorded as additional paid in capital. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromContributionsFromParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 15 -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment within three months. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 9 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-9 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-28 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480175/815-40-65-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-8 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-9 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480167/946-830-55-11 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480767/946-205-45-3 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483581/946-220-45-7 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481231/810-10-45-19 Reference 16: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482765/220-10-50-6 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-30 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 29: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479557/942-235-S99-1 Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483499/205-20-50-7 Reference 33: http://www.xbrl.org/2003/role/exampleRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 4J -Publisher FASB -URI https://asc.fasb.org//1943274/2147481175/810-10-55-4J Reference 34: http://www.xbrl.org/2003/role/exampleRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 4K -Publisher FASB -URI https://asc.fasb.org//1943274/2147481175/810-10-55-4K Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B Reference 37: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-2 Reference 38: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A Reference 39: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481668/980-835-25-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482064/980-835-45-1 + Details
Name: | us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from a repayment of a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(c)(3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(c)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(c)(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(c)(7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 5A -Subparagraph (SX 210.12-13A(Column F)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-5A + Details
Name: | us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating expense for depreciation and amortization of regulated operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PublicUtilityAxis=aep_RenewableEnergyFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=aep_CompetitiveContractedRenewablePortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=aep_CompetitiveContractedRenewablePortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTexasInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTransmissionCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AppalachianPowerCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_IndianaMichiganPowerCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_OhioPowerCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_PublicServiceCoOfOklahomaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_SouthwesternElectricPowerCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=aep_TurkAFUDCRefundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |