Comprehensive Income (Tables)
|
12 Months Ended |
Dec. 31, 2015 |
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | | | | | | | | | | | | | | AEP | | | | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | | | | | | | | | Cash Flow Hedges | | | | Pension and OPEB | | | | | Commodity | | Interest Rate and Foreign Currency | | Securities Available for Sale | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | | (in millions) | Balance in AOCI as of December 31, 2014 | | $ | 1.6 |
| | $ | (19.1 | ) | | $ | 7.7 |
| | $ | 138.7 |
| | $ | (232.0 | ) | | $ | (103.1 | ) | Change in Fair Value Recognized in AOCI | | 5.6 |
| | — |
| | (0.6 | ) | | — |
| | (25.7 | ) | | (20.7 | ) | Amounts Reclassified from AOCI | | (12.4 | ) | | 1.9 |
| | — |
| | 1.2 |
| | — |
| | (9.3 | ) | Net Current Period Other Comprehensive Income (Loss) | | (6.8 | ) | | 1.9 |
| | (0.6 | ) | | 1.2 |
| | (25.7 | ) | | (30.0 | ) | Pension and OPEB Adjustment Related to Mitchell Plant | | — |
| | — |
| | — |
| | — |
| | 6.0 |
| | 6.0 |
| Balance in AOCI as of December 31, 2015 | | $ | (5.2 | ) | | $ | (17.2 | ) | | $ | 7.1 |
| | $ | 139.9 |
| | $ | (251.7 | ) | | $ | (127.1 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | AEP | | | | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | | | | | | | | | Cash Flow Hedges | | | | Pension and OPEB | | | | | Commodity | | Interest Rate and Foreign Currency | | Securities Available for Sale | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | | (in millions) | Balance in AOCI as of December 31, 2013 | | $ | 0.2 |
| | $ | (23.0 | ) | | $ | 6.8 |
| | $ | 133.9 |
| | $ | (233.1 | ) | | $ | (115.2 | ) | Change in Fair Value Recognized in AOCI | | (9.8 | ) | | — |
| | 0.9 |
| | — |
| | 1.1 |
| | (7.8 | ) | Amounts Reclassified from AOCI | | 11.2 |
| | 3.9 |
| | — |
| | 4.8 |
| | — |
| | 19.9 |
| Net Current Period Other Comprehensive Income | | 1.4 |
| | 3.9 |
| | 0.9 |
| | 4.8 |
| | 1.1 |
| | 12.1 |
| Balance in AOCI as of December 31, 2014 | | $ | 1.6 |
| | $ | (19.1 | ) | | $ | 7.7 |
| | $ | 138.7 |
| | $ | (232.0 | ) | | $ | (103.1 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | AEP | | | | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | | | | | | | | | Cash Flow Hedges | | | | Pension and OPEB | | | | | Commodity | | Interest Rate and Foreign Currency | | Securities Available for Sale | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | | (in millions) | Balance in AOCI as of December 31, 2012 | | $ | (8.1 | ) | | $ | (30.2 | ) | | $ | 4.2 |
| | $ | 112.0 |
| | $ | (414.9 | ) | | $ | (337.0 | ) | Change in Fair Value Recognized in AOCI | | 10.4 |
| | 2.6 |
| | 2.6 |
| | — |
| | 176.6 |
| | 192.2 |
| Amounts Reclassified from AOCI | | (2.1 | ) | | 4.6 |
| | — |
| | 21.9 |
| | — |
| | 24.4 |
| Net Current Period Other Comprehensive Income | | 8.3 |
| | 7.2 |
| | 2.6 |
| | 21.9 |
| | 176.6 |
| | 216.6 |
| Pension and OPEB Adjustment Related to Mitchell Plant | | — |
| | — |
| | — |
| | — |
| | 5.2 |
| | 5.2 |
| Balance in AOCI as of December 31, 2013 | | $ | 0.2 |
| | $ | (23.0 | ) | | $ | 6.8 |
| | $ | 133.9 |
| | $ | (233.1 | ) | | $ | (115.2 | ) |
|
Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
| | | | | | | | | | | | | | AEP | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Vertically Integrated Utilities Revenues | | $ | — |
| | $ | — |
| | $ | (1.1 | ) | Generation & Marketing Revenues | | (48.1 | ) | | 59.1 |
| | (9.7 | ) | Purchased Electricity for Resale | | 29.1 |
| | (39.1 | ) | | 7.6 |
| Regulatory Assets/(Liabilities), Net (a) | | — |
| | (2.8 | ) | | — |
| Subtotal – Commodity | | (19.0 | ) | | 17.2 |
| | (3.2 | ) | | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | 2.9 |
| | 6.1 |
| | 7.1 |
| Subtotal – Interest Rate and Foreign Currency | | 2.9 |
| | 6.1 |
| | 7.1 |
| | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | (16.1 | ) | | 23.3 |
| | 3.9 |
| Income Tax (Expense) Credit | | (5.6 | ) | | 8.2 |
| | 1.4 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | (10.5 | ) | | 15.1 |
| | 2.5 |
| | | | | | | | Pension and OPEB | | | | | | | Amortization of Prior Service Cost (Credit) | | (19.5 | ) | | (20.6 | ) | | (21.0 | ) | Amortization of Actuarial (Gains)/Losses | | 21.3 |
| | 28.0 |
| | 54.7 |
| Reclassifications from AOCI, before Income Tax (Expense) Credit | | 1.8 |
| | 7.4 |
| | 33.7 |
| Income Tax (Expense) Credit | | 0.6 |
| | 2.6 |
| | 11.8 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | 1.2 |
| | 4.8 |
| | 21.9 |
| | | | | | | | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | (9.3 | ) | | $ | 19.9 |
|
| $ | 24.4 |
|
|
Appalachian Power Co [Member] |
|
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | | | | | | | | | APCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 3.9 |
| | $ | 19.2 |
| | $ | (18.1 | ) | | $ | 5.0 |
| Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | (5.7 | ) | | (5.7 | ) | Amounts Reclassified from AOCI | — |
| | (0.3 | ) | | (1.8 | ) | | — |
| | (2.1 | ) | Net Current Period Other Comprehensive Loss | — |
| | (0.3 | ) | | (1.8 | ) | | (5.7 | ) | | (7.8 | ) | Balance in AOCI as of December 31, 2015 | $ | — |
| | $ | 3.6 |
| | $ | 17.4 |
| | $ | (23.8 | ) | | $ | (2.8 | ) |
| | | | | | | | | | | | | | | | | | | | | APCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 3.1 |
| | $ | 20.5 |
| | $ | (20.8 | ) | | $ | 2.9 |
| Change in Fair Value Recognized in AOCI | 1.7 |
| | — |
| | — |
| | 2.7 |
| | 4.4 |
| Amounts Reclassified from AOCI | (1.8 | ) | | 0.8 |
| | (1.3 | ) | | — |
| | (2.3 | ) | Net Current Period Other Comprehensive Income (Loss) | (0.1 | ) | | 0.8 |
| | (1.3 | ) | | 2.7 |
| | 2.1 |
| Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 3.9 |
| | $ | 19.2 |
| | $ | (18.1 | ) | | $ | 5.0 |
|
| | | | | | | | | | | | | | | | | | | | | APCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2012 | $ | (0.6 | ) | | $ | 2.1 |
| | $ | 19.1 |
| | $ | (50.5 | ) | | $ | (29.9 | ) | Change in Fair Value Recognized in AOCI | 0.7 |
| | — |
| | — |
| | 29.7 |
| | 30.4 |
| Amounts Reclassified from AOCI | — |
| | 1.0 |
| | 1.4 |
| | — |
| | 2.4 |
| Net Current Period Other Comprehensive Income | 0.7 |
| | 1.0 |
| | 1.4 |
| | 29.7 |
| | 32.8 |
| Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 3.1 |
| | $ | 20.5 |
| | $ | (20.8 | ) | | $ | 2.9 |
|
|
Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
| | | | | | | | | | | | | | APCo | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Electric Generation, Transmission and Distribution Revenues | | $ | — |
| | $ | — |
| | $ | (0.1 | ) | Purchased Electricity for Resale | | — |
| | (0.5 | ) | | 0.1 |
| Regulatory Assets/(Liabilities), Net (a) | | — |
| | (2.2 | ) | | — |
| Subtotal – Commodity | | — |
| | (2.7 | ) | | — |
| | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | (0.4 | ) | | 1.2 |
| | 1.5 |
| Subtotal – Interest Rate and Foreign Currency | | (0.4 | ) | | 1.2 |
| | 1.5 |
| | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | (0.4 | ) | | (1.5 | ) | | 1.5 |
| Income Tax (Expense) Credit | | (0.1 | ) | | (0.5 | ) | | 0.5 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | (0.3 | ) | | (1.0 | ) | | 1.0 |
| | | | | | | | Pension and OPEB | | | | | | | Amortization of Prior Service Cost (Credit) | | (5.1 | ) | | (5.1 | ) | | (5.1 | ) | Amortization of Actuarial (Gains)/Losses | | 2.3 |
| | 3.1 |
| | 7.3 |
| Reclassifications from AOCI, before Income Tax (Expense) Credit | | (2.8 | ) | | (2.0 | ) | | 2.2 |
| Income Tax (Expense) Credit | | (1.0 | ) | | (0.7 | ) | | 0.8 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | (1.8 | ) | | (1.3 | ) | | 1.4 |
| | | | | | | | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | (2.1 | ) | | $ | (2.3 | ) | | $ | 2.4 |
|
|
Indiana Michigan Power Co [Member] |
|
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | | | | | | | | | I&M | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | (14.4 | ) | | $ | 5.1 |
| | $ | (5.0 | ) | | $ | (14.3 | ) | Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | (3.5 | ) | | (3.5 | ) | Amounts Reclassified from AOCI | — |
| | 1.1 |
| | — |
| | — |
| | 1.1 |
| Net Current Period Other Comprehensive Income (Loss) | — |
| | 1.1 |
| | — |
| | (3.5 | ) | | (2.4 | ) | Balance in AOCI as of December 31, 2015 | $ | — |
| | $ | (13.3 | ) | | $ | 5.1 |
| | $ | (8.5 | ) | | $ | (16.7 | ) |
| | | | | | | | | | | | | | | | | | | | | I&M | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | (16.0 | ) | | $ | 4.9 |
| | $ | (4.5 | ) | | $ | (15.5 | ) | Change in Fair Value Recognized in AOCI | 1.1 |
| | — |
| | — |
| | (0.5 | ) | | 0.6 |
| Amounts Reclassified from AOCI | (1.2 | ) | | 1.6 |
| | 0.2 |
| | — |
| | 0.6 |
| Net Current Period Other Comprehensive Income (Loss) | (0.1 | ) | | 1.6 |
| | 0.2 |
| | (0.5 | ) | | 1.2 |
| Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | (14.4 | ) | | $ | 5.1 |
| | $ | (5.0 | ) | | $ | (14.3 | ) |
| | | | | | | | | | | | | | | | | | | | | I&M | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2012 | $ | (0.4 | ) | | $ | (19.7 | ) | | $ | 4.2 |
| | $ | (13.0 | ) | | $ | (28.9 | ) | Change in Fair Value Recognized in AOCI | 0.5 |
| | 2.3 |
| | — |
| | 8.5 |
| | 11.3 |
| Amounts Reclassified from AOCI | — |
| | 1.4 |
| | 0.7 |
| | — |
| | 2.1 |
| Net Current Period Other Comprehensive Income | 0.5 |
| | 3.7 |
| | 0.7 |
| | 8.5 |
| | 13.4 |
| Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | (16.0 | ) | | $ | 4.9 |
| | $ | (4.5 | ) | | $ | (15.5 | ) |
|
Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
| | | | | | | | | | | | | | I&M | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Electric Generation, Transmission and Distribution Revenues | | $ | — |
| | $ | — |
| | $ | (0.2 | ) | Purchased Electricity for Resale | | — |
| | (0.8 | ) | | 0.2 |
| Regulatory Assets/(Liabilities), Net (a) | | — |
| | (1.0 | ) | | — |
| Subtotal – Commodity | | — |
| | (1.8 | ) | | — |
| | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | 1.7 |
| | 2.4 |
| | 2.2 |
| Subtotal – Interest Rate and Foreign Currency | | 1.7 |
| | 2.4 |
| | 2.2 |
| | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | 1.7 |
| | 0.6 |
| | 2.2 |
| Income Tax (Expense) Credit | | 0.6 |
| | 0.2 |
| | 0.8 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | 1.1 |
| | 0.4 |
| | 1.4 |
| | | | | | | | Pension and OPEB | | | | | | | Amortization of Prior Service Cost (Credit) | | (0.9 | ) | | (0.8 | ) | | (0.8 | ) | Amortization of Actuarial (Gains)/Losses | | 0.9 |
| | 1.1 |
| | 1.9 |
| Reclassifications from AOCI, before Income Tax (Expense) Credit | | — |
| | 0.3 |
| | 1.1 |
| Income Tax (Expense) Credit | | — |
| | 0.1 |
| | 0.4 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | — |
| | 0.2 |
| | 0.7 |
| | | | | | | | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | 1.1 |
| | $ | 0.6 |
| | $ | 2.1 |
|
|
Ohio Power Co [Member] |
|
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | | | | | | | | | OPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 5.6 |
| | $ | 58.4 |
| | $ | (58.4 | ) | | $ | 5.6 |
| Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | — |
| | — |
| Amounts Reclassified from AOCI | — |
| | (1.3 | ) | | — |
| | — |
| | (1.3 | ) | Net Current Period Other Comprehensive Loss | — |
| | (1.3 | ) | | — |
| | — |
| | (1.3 | ) | Balance in AOCI as of December 31, 2015 | $ | — |
| | $ | 4.3 |
| | $ | 58.4 |
| | $ | (58.4 | ) | | $ | 4.3 |
|
| | | | | | | | | | | | | | | | | | | | | OPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 7.0 |
| | $ | 58.4 |
| | $ | (58.4 | ) | | $ | 7.1 |
| Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | — |
| | — |
| Amounts Reclassified from AOCI | (0.1 | ) | | (1.4 | ) | | — |
| | — |
| | (1.5 | ) | Net Current Period Other Comprehensive Loss | (0.1 | ) | | (1.4 | ) | | — |
| | — |
| | (1.5 | ) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 5.6 |
| | $ | 58.4 |
| | $ | (58.4 | ) | | $ | 5.6 |
|
| | | | | | | | | | | | | | | | | | | | | OPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2012 | $ | (0.9 | ) | | $ | 8.1 |
| | $ | 45.9 |
| | $ | (218.8 | ) | | $ | (165.7 | ) | Change in Fair Value Recognized in AOCI | 1.0 |
| | — |
| | — |
| | 65.4 |
| | 66.4 |
| Amounts Reclassified from AOCI | — |
| | (1.3 | ) | | 12.5 |
| | — |
| | 11.2 |
| Net Current Period Other Comprehensive Income (Loss) | 1.0 |
| | (1.3 | ) | | 12.5 |
| | 65.4 |
| | 77.6 |
| Distribution of Cook Coal Terminal to Parent | — |
| | — |
| | — |
| | 19.6 |
| | 19.6 |
| Distribution of OPCo Generation to Parent | — |
| | 0.2 |
| | — |
| | 75.4 |
| | 75.6 |
| Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 7.0 |
| | $ | 58.4 |
| | $ | (58.4 | ) | | $ | 7.1 |
|
|
Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
| | | | | | | | | | | | | | OPCo | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Electric Generation, Transmission and Distribution Revenues | | $ | — |
| | $ | — |
| | $ | (0.4 | ) | Purchased Electricity for Resale | | — |
| | — |
| | 0.6 |
| Other Operation Expense | | — |
| | — |
| | (0.1 | ) | Regulatory Assets/(Liabilities), Net (a) | | — |
| | (0.2 | ) | | — |
| Subtotal – Commodity | | — |
| | (0.2 | ) | | 0.1 |
| | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | (2.0 | ) | | (2.1 | ) | | (2.1 | ) | Subtotal – Interest Rate and Foreign Currency | | (2.0 | ) | | (2.1 | ) | | (2.1 | ) | | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | (2.0 | ) | | (2.3 | ) | | (2.0 | ) | Income Tax (Expense) Credit | | (0.7 | ) | | (0.8 | ) | | (0.7 | ) | Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | (1.3 | ) | | (1.5 | ) | | (1.3 | ) | | | | | | | | Pension and OPEB | | | | | | | Amortization of Prior Service Cost (Credit) | | — |
| | — |
| | (5.8 | ) | Amortization of Actuarial (Gains)/Losses | | — |
| | — |
| | 25.0 |
| Reclassifications from AOCI, before Income Tax (Expense) Credit | | — |
| | — |
| | 19.2 |
| Income Tax (Expense) Credit | | — |
| | — |
| | 6.7 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | — |
| | — |
| | 12.5 |
| | | | | | | | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | (1.3 | ) | | $ | (1.5 | ) | | $ | 11.2 |
|
|
Public Service Co Of Oklahoma [Member] |
|
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | PSO | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | Cash Flow Hedges | | | | Commodity | | Interest Rate and Foreign Currency | | Total | | (in millions) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 5.0 |
| | $ | 5.0 |
| Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| Amounts Reclassified from AOCI | — |
| | (0.8 | ) | | (0.8 | ) | Net Current Period Other Comprehensive Loss | — |
| | (0.8 | ) | | (0.8 | ) | Balance in AOCI as of December 31, 2015 | $ | — |
| | $ | 4.2 |
| | $ | 4.2 |
|
| | | | | | | | | | | | | PSO | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | Cash Flow Hedges | | | | Commodity | | Interest Rate and Foreign Currency | | Total | | (in millions) | Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 5.7 |
| | $ | 5.8 |
| Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| Amounts Reclassified from AOCI | (0.1 | ) | | (0.7 | ) | | (0.8 | ) | Net Current Period Other Comprehensive Loss | (0.1 | ) | | (0.7 | ) | | (0.8 | ) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | 5.0 |
| | $ | 5.0 |
|
| | | | | | | | | | | | | PSO | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | Cash Flow Hedges | | | | Commodity | | Interest Rate and Foreign Currency | | Total | | (in millions) | Balance in AOCI as of December 31, 2012 | $ | — |
| | $ | 6.5 |
| | $ | 6.5 |
| Change in Fair Value Recognized in AOCI | 0.1 |
| | — |
| | 0.1 |
| Amounts Reclassified from AOCI | — |
| | (0.8 | ) | | (0.8 | ) | Net Current Period Other Comprehensive Income (Loss) | 0.1 |
| | (0.8 | ) | | (0.7 | ) | Balance in AOCI as of December 31, 2013 | $ | 0.1 |
| | $ | 5.7 |
| | $ | 5.8 |
|
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Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
| | | | | | | | | | | | | | PSO | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Regulatory Assets/(Liabilities), Net (a) | | $ | — |
| | $ | (0.1 | ) | | $ | — |
| Subtotal – Commodity | | — |
| | (0.1 | ) | | — |
| | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | (1.2 | ) | | (1.1 | ) | | (1.2 | ) | Subtotal – Interest Rate and Foreign Currency | | (1.2 | ) | | (1.1 | ) | | (1.2 | ) | | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | (1.2 | ) | | (1.2 | ) | | (1.2 | ) | Income Tax (Expense) Credit | | (0.4 | ) | | (0.4 | ) | | (0.4 | ) | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | (0.8 | ) | | $ | (0.8 | ) | | $ | (0.8 | ) |
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Southwestern Electric Power Co [Member] |
|
Changes in Accumulated Other Comprehensive Income (Loss) by Component |
| | | | | | | | | | | | | | | | | | | | | SWEPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2015 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | (11.1 | ) | | $ | 3.6 |
| | $ | — |
| | $ | (7.5 | ) | Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | (2.9 | ) | | (2.9 | ) | Amounts Reclassified from AOCI | — |
| | 2.0 |
| | (1.0 | ) | | — |
| | 1.0 |
| Net Current Period Other Comprehensive Income (Loss) | — |
| | 2.0 |
| | (1.0 | ) | | (2.9 | ) | | (1.9 | ) | Balance in AOCI as of December 31, 2015 | $ | — |
| | $ | (9.1 | ) | | $ | 2.6 |
| | $ | (2.9 | ) | | $ | (9.4 | ) |
| | | | | | | | | | | | | | | | | | | | | SWEPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2014 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2013 | $ | — |
| | $ | (13.3 | ) | | $ | 4.5 |
| | $ | 0.3 |
| | $ | (8.5 | ) | Change in Fair Value Recognized in AOCI | — |
| | — |
| | — |
| | (0.3 | ) | | (0.3 | ) | Amounts Reclassified from AOCI | — |
| | 2.2 |
| | (0.9 | ) | | — |
| | 1.3 |
| Net Current Period Other Comprehensive Income (Loss) | — |
| | 2.2 |
| | (0.9 | ) | | (0.3 | ) | | 1.0 |
| Balance in AOCI as of December 31, 2014 | $ | — |
| | $ | (11.1 | ) | | $ | 3.6 |
| | $ | — |
| | $ | (7.5 | ) |
| | | | | | | | | | | | | | | | | | | | | SWEPCo | | | | | | | | | | Changes in Accumulated Other Comprehensive Income (Loss) by Component | For the Year Ended December 31, 2013 | | | | | | | | | | | | Cash Flow Hedges | | Pension and OPEB | | | | Commodity | | Interest Rate and Foreign Currency | | Amortization of Deferred Costs | | Changes in Funded Status | | Total | | (in millions) | Balance in AOCI as of December 31, 2012 | $ | — |
| | $ | (15.6 | ) | | $ | 4.8 |
| | $ | (7.1 | ) | | $ | (17.9 | ) | Change in Fair Value Recognized in AOCI | 0.1 |
| | — |
| | — |
| | 7.4 |
| | 7.5 |
| Amounts Reclassified from AOCI | (0.1 | ) | | 2.3 |
| | (0.3 | ) | | — |
| | 1.9 |
| Net Current Period Other Comprehensive Income (Loss) | — |
| | 2.3 |
| | (0.3 | ) | | 7.4 |
| | 9.4 |
| Balance in AOCI as of December 31, 2013 | $ | — |
| | $ | (13.3 | ) | | $ | 4.5 |
| | $ | 0.3 |
| | $ | (8.5 | ) |
|
Reclassifications from Accumulated Other Comprehensive Income (Loss) |
| | | | | | | | | | | | | | SWEPCo | | | | | | | Reclassifications from Accumulated Other Comprehensive Income (Loss) | | | | | | | | | | Amount of (Gain) Loss Reclassified from AOCI | | | Years Ended December 31, | | | 2015 | | 2014 | | 2013 | Gains and Losses on Cash Flow Hedges | | (in millions) | Commodity: | | | | | | | Other Operation Expense | | $ | — |
| | $ | — |
| | $ | (0.1 | ) | Regulatory Assets/(Liabilities), Net (a) | | — |
| | (0.1 | ) | | — |
| Subtotal – Commodity | | — |
| | (0.1 | ) | | (0.1 | ) | | | | | | | | Interest Rate and Foreign Currency: | | | | | | | Interest Expense | | 3.1 |
| | 3.5 |
| | 3.5 |
| Subtotal – Interest Rate and Foreign Currency | | 3.1 |
| | 3.5 |
| | 3.5 |
| | | | | | | | Reclassifications from AOCI, before Income Tax (Expense) Credit | | 3.1 |
| | 3.4 |
| | 3.4 |
| Income Tax (Expense) Credit | | 1.1 |
| | 1.2 |
| | 1.2 |
| Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | 2.0 |
| | 2.2 |
| | 2.2 |
| | | | | | | | Pension and OPEB | | | | | | | Amortization of Prior Service Cost (Credit) | | (1.9 | ) | | (1.9 | ) | | (1.8 | ) | Amortization of Actuarial (Gains)/Losses | | 0.4 |
| | 0.5 |
| | 1.4 |
| Reclassifications from AOCI, before Income Tax (Expense) Credit | | (1.5 | ) | | (1.4 | ) | | (0.4 | ) | Income Tax (Expense) Credit | | (0.5 | ) | | (0.5 | ) | | (0.1 | ) | Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | (1.0 | ) | | (0.9 | ) | | (0.3 | ) | | | | | | | | Total Reclassifications from AOCI, Net of Income Tax (Expense) Credit | | $ | 1.0 |
| | $ | 1.3 |
| | $ | 1.9 |
|
| | (a) | Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the balance sheets. |
|