Unaudited Quarterly Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
Dec. 31, 2014
|
Sep. 30, 2014
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
$ 4,026,000us-gaap_Revenues |
|
$ 4,302,000us-gaap_Revenues |
|
$ 4,044,000us-gaap_Revenues |
|
$ 4,648,000us-gaap_Revenues |
|
$ 3,773,000us-gaap_Revenues |
|
$ 4,176,000us-gaap_Revenues |
|
$ 3,582,000us-gaap_Revenues |
|
$ 3,826,000us-gaap_Revenues |
|
$ 17,020,000us-gaap_Revenues |
$ 15,357,000us-gaap_Revenues |
$ 14,945,000us-gaap_Revenues |
Operating Income |
499,000us-gaap_OperatingIncomeLoss |
[1] |
925,000us-gaap_OperatingIncomeLoss |
|
767,000us-gaap_OperatingIncomeLoss |
|
1,041,000us-gaap_OperatingIncomeLoss |
|
678,000us-gaap_OperatingIncomeLoss |
[2],[3] |
875,000us-gaap_OperatingIncomeLoss |
[4] |
547,000us-gaap_OperatingIncomeLoss |
[5] |
755,000us-gaap_OperatingIncomeLoss |
|
3,232,000us-gaap_OperatingIncomeLoss |
2,855,000us-gaap_OperatingIncomeLoss |
2,656,000us-gaap_OperatingIncomeLoss |
Net Income |
192,000us-gaap_ProfitLoss |
[1] |
494,000us-gaap_ProfitLoss |
|
391,000us-gaap_ProfitLoss |
|
561,000us-gaap_ProfitLoss |
|
347,000us-gaap_ProfitLoss |
[2],[3] |
434,000us-gaap_ProfitLoss |
[4] |
339,000us-gaap_ProfitLoss |
[5],[6] |
364,000us-gaap_ProfitLoss |
|
1,638,000us-gaap_ProfitLoss |
1,484,000us-gaap_ProfitLoss |
1,262,000us-gaap_ProfitLoss |
Amounts Attributable to AEP Common Shareholders |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Earnings Attributable To AEP Common Shareholders |
191,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
|
493,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
|
390,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
|
560,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
|
346,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
[2],[3] |
433,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
[4] |
338,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
[5],[6] |
363,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
|
1,634,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
1,480,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
1,259,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
Basic Earnings (Loss) per Share Attributable to AEP Common Shareholders: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Basic Earnings Per Share Attributable to AEP Common Shareholders |
$ 0.39us-gaap_EarningsPerShareBasic |
[7] |
$ 1.01us-gaap_EarningsPerShareBasic |
[7] |
$ 0.80us-gaap_EarningsPerShareBasic |
[7] |
$ 1.15us-gaap_EarningsPerShareBasic |
[7] |
$ 0.71us-gaap_EarningsPerShareBasic |
[7] |
$ 0.89us-gaap_EarningsPerShareBasic |
[7] |
$ 0.69us-gaap_EarningsPerShareBasic |
[7] |
$ 0.75us-gaap_EarningsPerShareBasic |
[7] |
$ 3.34us-gaap_EarningsPerShareBasic |
$ 3.04us-gaap_EarningsPerShareBasic |
$ 2.60us-gaap_EarningsPerShareBasic |
Diluted Earnings (Loss) per Share Attributable to AEP Common Shareholders: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Diluted Earnings Per Share Attributable to AEP Common Shareholders |
$ 0.39us-gaap_EarningsPerShareDiluted |
[7] |
$ 1.01us-gaap_EarningsPerShareDiluted |
[7] |
$ 0.80us-gaap_EarningsPerShareDiluted |
[7] |
$ 1.15us-gaap_EarningsPerShareDiluted |
[7] |
$ 0.71us-gaap_EarningsPerShareDiluted |
[7] |
$ 0.89us-gaap_EarningsPerShareDiluted |
[7] |
$ 0.69us-gaap_EarningsPerShareDiluted |
[7] |
$ 0.75us-gaap_EarningsPerShareDiluted |
[7] |
$ 3.34us-gaap_EarningsPerShareDiluted |
$ 3.04us-gaap_EarningsPerShareDiluted |
$ 2.60us-gaap_EarningsPerShareDiluted |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
81,000us-gaap_AssetRetirementObligationRevisionOfEstimate |
54,000us-gaap_AssetRetirementObligationRevisionOfEstimate |
|
Appalachian Power Co [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
735,135us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
709,884us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
694,668us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
913,391us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
869,675us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
849,733us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
746,504us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
951,494us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
3,053,078us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
3,417,406us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
3,276,931us-gaap_Revenues / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
Operating Income |
107,263us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
130,236us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
110,677us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
220,010us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
101,954us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
[2] |
147,692us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
92,072us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
164,560us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
568,186us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
506,278us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
597,460us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
Net Income |
28,559us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
48,758us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
36,247us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
101,851us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
30,176us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
[2] |
62,625us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
29,862us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
70,548us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
215,415us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
193,211us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
257,503us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10,681us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
7,083us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_AppalachianPowerCoMember |
|
Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
531,141us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
542,863us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
533,876us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
641,854us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
595,100us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
638,865us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
549,501us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
583,393us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
2,249,734us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
2,366,859us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
2,200,111us-gaap_Revenues / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
Operating Income |
39,234us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
62,851us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
57,133us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
146,024us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
60,734us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
102,364us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
77,533us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
81,230us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
305,242us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
321,861us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
247,694us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
Net Income |
14,598us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
26,626us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
27,334us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
87,089us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
35,413us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
57,880us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
40,754us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
43,457us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
155,647us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
177,504us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
118,457us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
28,740us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
(9,152)us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_IndianaMichiganPowerCoMember |
|
Ohio Power Co [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
871,370us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
839,197us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
786,161us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
880,192us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
1,146,655us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
1,279,176us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
1,102,994us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
1,233,790us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
3,376,920us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
4,762,615us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
4,928,196us-gaap_Revenues / dei_LegalEntityAxis = aep_OhioPowerCoMember |
Operating Income |
99,086us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
104,679us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
114,021us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
115,719us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
162,418us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
312,795us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
73,072us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[5] |
244,813us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
433,505us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
793,098us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
676,947us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
Net Income |
45,053us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
54,060us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
56,535us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
60,774us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[8] |
80,249us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
178,901us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
21,056us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
[5] |
129,774us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
216,422us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
409,980us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
343,534us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_OhioPowerCoMember |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_OhioPowerCoMember |
53,208us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_OhioPowerCoMember |
|
Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
314,385us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
416,991us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
318,815us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
301,385us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
297,463us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
411,083us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
324,687us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
262,289us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
1,351,576us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
1,295,522us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
1,232,938us-gaap_Revenues / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
Operating Income |
27,214us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
87,414us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
48,878us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
25,326us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
23,380us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
95,832us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
58,471us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
33,552us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
188,832us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
211,235us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
230,950us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
Net Income |
10,946us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
45,086us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
22,449us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
8,448us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
4,575us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
51,096us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
28,432us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
13,693us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
86,929us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
97,796us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
114,141us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14,055us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
(19)us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_PublicServiceCoOfOklahomaMember |
|
Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Unaudited Quarterly Financial Information |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total Revenues |
424,753us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
531,771us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
449,283us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
440,590us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
428,380us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
552,933us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
420,173us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
394,317us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
1,846,397us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
1,795,803us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
1,577,834us-gaap_Revenues / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
Operating Income |
45,998us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
133,131us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
78,787us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
64,726us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
163,813us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
[3] |
52,359us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
[9] |
77,032us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
50,639us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
322,642us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
343,843us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
275,896us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
Net Income |
14,227us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
74,547us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
32,823us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
22,962us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
104,124us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
[3] |
7,920us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
[9] |
30,227us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
11,548us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
144,559us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
153,819us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
202,513us-gaap_ProfitLoss / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
Amounts Attributable to AEP Common Shareholders |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Earnings Attributable To AEP Common Shareholders |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
140,369us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
149,811us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
198,891us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
Unaudited Quarterly Financial Information (Textuals) [Abstract] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Favorable Asset Retirement Obligation Adjustment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 2,710us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
$ 3,209us-gaap_AssetRetirementObligationRevisionOfEstimate / dei_LegalEntityAxis = aep_SouthwesternElectricPowerCoMember |
|
|
|