Comprehensive Income (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	$ (109,000,000)		$ (306,000,000)		$ (115,000,000)		$ (337,000,000)
Change in Fair Value Recognized in AOCI	4,000,000		(9,000,000)		(10,000,000)		13,000,000
Amounts Reclassified from AOCI	1,000,000		2,000,000		21,000,000		11,000,000
Net Current Period Other Comprehensive Income	5,000,000		(7,000,000)		11,000,000		24,000,000
Ending Balance in AOCI	(104,000,000)		(313,000,000)		(104,000,000)		(313,000,000)
Commodity:
Vertically Integrated Utilities	2,236,000,000		2,176,000,000		4,785,000,000		4,532,000,000
Generation & Marketing Revenues	171,000,000		89,000,000		288,000,000		211,000,000
Purchased Electricity for Resale	473,000,000		359,000,000		1,111,000,000		730,000,000
Other Operation Expense	760,000,000		664,000,000		1,540,000,000		1,402,000,000
Maintenance Expense	340,000,000		285,000,000		632,000,000		578,000,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	443,000,000		443,000,000		934,000,000		863,000,000
Interest Expense	221,000,000		228,000,000		441,000,000		460,000,000
Income Tax (Expense) Credit	(215,000,000)		(68,000,000)		(522,000,000)		(263,000,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Gains and Losses on Available-for-Sale Securities
Interest Income	3,000,000		49,000,000		4,000,000		52,000,000
Interest Expense	221,000,000		228,000,000		441,000,000		460,000,000
Income Tax (Expense) Credit	(215,000,000)		(68,000,000)		(522,000,000)		(263,000,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(215,000,000)		(68,000,000)		(522,000,000)		(263,000,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Securities Available for Sale [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	7,000,000		5,000,000		7,000,000		4,000,000
Change in Fair Value Recognized in AOCI	1,000,000		0		1,000,000		1,000,000
Amounts Reclassified from AOCI	0		0		0		0
Net Current Period Other Comprehensive Income	1,000,000		0		1,000,000		1,000,000
Ending Balance in AOCI	8,000,000		5,000,000		8,000,000		5,000,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		0		0		0
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		0		0		0
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		0		0		0
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		0		0		0
Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(98,000,000)		(297,000,000)		(99,000,000)		(303,000,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	1,000,000		3,000,000		2,000,000		9,000,000
Net Current Period Other Comprehensive Income	1,000,000		3,000,000		2,000,000		9,000,000
Ending Balance in AOCI	(97,000,000)		(294,000,000)		(97,000,000)		(294,000,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	4,000,000		12,000,000		0		(8,000,000)
Change in Fair Value Recognized in AOCI	3,000,000		(8,000,000)		(11,000,000)		10,000,000
Amounts Reclassified from AOCI	(1,000,000)		(3,000,000)		17,000,000		(1,000,000)
Net Current Period Other Comprehensive Income	2,000,000		(11,000,000)		6,000,000		9,000,000
Ending Balance in AOCI	6,000,000		1,000,000		6,000,000		1,000,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(1,000,000)		(3,000,000)		17,000,000		(1,000,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(1,000,000)		(3,000,000)		17,000,000		(1,000,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(1,000,000)		(3,000,000)		17,000,000		(1,000,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(1,000,000)		(3,000,000)		17,000,000		(1,000,000)
Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(22,000,000)		(26,000,000)		(23,000,000)		(30,000,000)
Change in Fair Value Recognized in AOCI	0		(1,000,000)		0		2,000,000
Amounts Reclassified from AOCI	1,000,000		2,000,000		2,000,000		3,000,000
Net Current Period Other Comprehensive Income	1,000,000		1,000,000		2,000,000		5,000,000
Ending Balance in AOCI	(21,000,000)		(25,000,000)		(21,000,000)		(25,000,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		3,000,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		3,000,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		3,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		3,000,000
Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	1,000,000		2,000,000		21,000,000		11,000,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		2,000,000		21,000,000		11,000,000
Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	0		(1,000,000)		19,000,000		2,000,000
Commodity:
Subtotal - Commodity	0		(2,000,000)		30,000,000		3,000,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	0		(2,000,000)		30,000,000		3,000,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(2,000,000)		30,000,000		3,000,000
Income Tax (Expense) Credit	0		(1,000,000)		11,000,000		1,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(1,000,000)		19,000,000		2,000,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(2,000,000)		30,000,000		3,000,000
Income Tax (Expense) Credit	0		(1,000,000)		11,000,000		1,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(1,000,000)		19,000,000		2,000,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(2,000,000)		30,000,000		3,000,000
Income Tax (Expense) Credit	0		(1,000,000)		11,000,000		1,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(1,000,000)		19,000,000		2,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(1,000,000)		19,000,000		2,000,000
Reclassifications from Accumulated Other Comprehensive Income [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	1,000,000		3,000,000		2,000,000		9,000,000
Commodity:
Subtotal - Commodity	2,000,000		5,000,000		4,000,000		14,000,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	2,000,000		5,000,000		4,000,000		14,000,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		5,000,000		4,000,000		14,000,000
Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		5,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		5,000,000		4,000,000		14,000,000
Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		5,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Amortization of Pension and OPEB
Prior Service Cost (Credit)	(5,000,000)		(4,000,000)		(10,000,000)		(9,000,000)
Actuarial (Gains)/Losses	7,000,000		9,000,000		14,000,000		23,000,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		5,000,000		4,000,000		14,000,000
Income Tax (Expense) Credit	1,000,000		2,000,000		2,000,000		5,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	1,000,000		3,000,000		2,000,000		9,000,000
Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Commodity:
Vertically Integrated Utilities	0		0		0		0
Generation & Marketing Revenues	0		(2,000,000)		0		(5,000,000)
Purchased Electricity for Resale	(2,000,000)		(2,000,000)		29,000,000		4,000,000
Property, Plant and Equipment	0		0		0		0
Regulatory Assets/(Liabilities), Net	0	[1]	0	[1]	(3,000,000)	[1]	0	[1]
Subtotal - Commodity	(2,000,000)		(4,000,000)		26,000,000		(1,000,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(2,000,000)		(4,000,000)		26,000,000		(1,000,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(2,000,000)		(4,000,000)		26,000,000		(1,000,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(2,000,000)		(4,000,000)		26,000,000		(1,000,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(2,000,000)		(4,000,000)		26,000,000		(1,000,000)
Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	2,000,000		2,000,000		4,000,000		4,000,000
Interest Rate and Foreign Currency:
Interest Expense	2,000,000		2,000,000		4,000,000		4,000,000
Subtotal - Interest Rate and Foreign Currency	2,000,000		2,000,000		4,000,000		4,000,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		2,000,000		4,000,000		4,000,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	2,000,000		2,000,000		4,000,000		4,000,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		2,000,000		4,000,000		4,000,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	2,000,000		2,000,000		4,000,000		4,000,000
Appalachian Power Co [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	2,864,000		(28,282,000)		2,951,000		(29,898,000)
Change in Fair Value Recognized in AOCI	103,000		(62,000)		1,686,000		731,000
Amounts Reclassified from AOCI	(270,000)		509,000		(1,940,000)		1,332,000
Net Current Period Other Comprehensive Income	(167,000)		447,000		(254,000)		2,063,000
Ending Balance in AOCI	2,697,000		(27,835,000)		2,697,000		(27,835,000)
Commodity:
Vertically Integrated Utilities	664,051,000		670,249,000		1,530,508,000		1,542,981,000
Generation & Marketing Revenues	2,547,000		2,362,000		4,567,000		4,264,000
Purchased Electricity for Resale	86,033,000		59,487,000		255,024,000		124,943,000
Other Operation Expense	99,896,000		79,764,000		193,434,000		158,672,000
Maintenance Expense	69,484,000		58,560,000		129,574,000		157,946,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	95,650,000		83,240,000		200,236,000		171,143,000
Interest Expense	53,130,000		48,128,000		104,802,000		96,332,000
Income Tax (Expense) Credit	(23,577,000)		(19,897,000)		(89,825,000)		(66,909,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	53,130,000		48,128,000		104,802,000		96,332,000
Income Tax (Expense) Credit	(23,577,000)		(19,897,000)		(89,825,000)		(66,909,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(23,577,000)		(19,897,000)		(89,825,000)		(66,909,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Appalachian Power Co [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(566,000)		(30,973,000)		(233,000)		(31,331,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	(333,000)		358,000		(666,000)		716,000
Net Current Period Other Comprehensive Income	(333,000)		358,000		(666,000)		716,000
Ending Balance in AOCI	(899,000)		(30,615,000)		(899,000)		(30,615,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Appalachian Power Co [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	87,000		361,000		94,000		(644,000)
Change in Fair Value Recognized in AOCI	103,000		(63,000)		1,686,000		731,000
Amounts Reclassified from AOCI	(190,000)		(101,000)		(1,780,000)		110,000
Net Current Period Other Comprehensive Income	(87,000)		(164,000)		(94,000)		841,000
Ending Balance in AOCI	0		197,000		0		197,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(101,000)		(1,780,000)		110,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(101,000)		(1,780,000)		110,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(101,000)		(1,780,000)		110,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(101,000)		(1,780,000)		110,000
Appalachian Power Co [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	3,343,000		2,330,000		3,090,000		2,077,000
Change in Fair Value Recognized in AOCI	0		1,000		0		0
Amounts Reclassified from AOCI	253,000		252,000		506,000		506,000
Net Current Period Other Comprehensive Income	253,000		253,000		506,000		506,000
Ending Balance in AOCI	3,596,000		2,583,000		3,596,000		2,583,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	253,000		252,000		506,000		506,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	253,000		252,000		506,000		506,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	253,000		252,000		506,000		506,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	253,000		252,000		506,000		506,000
Appalachian Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(270,000)		509,000		(1,940,000)		1,332,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(270,000)		509,000		(1,940,000)		1,332,000
Appalachian Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	63,000		151,000		(1,274,000)		616,000
Commodity:
Subtotal - Commodity	98,000		232,000		(1,958,000)		947,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	98,000		232,000		(1,958,000)		947,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	98,000		232,000		(1,958,000)		947,000
Income Tax (Expense) Credit	35,000		81,000		(684,000)		331,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	63,000		151,000		(1,274,000)		616,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	98,000		232,000		(1,958,000)		947,000
Income Tax (Expense) Credit	35,000		81,000		(684,000)		331,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	63,000		151,000		(1,274,000)		616,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	98,000		232,000		(1,958,000)		947,000
Income Tax (Expense) Credit	35,000		81,000		(684,000)		331,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	63,000		151,000		(1,274,000)		616,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	63,000		151,000		(1,274,000)		616,000
Appalachian Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(333,000)		358,000		(666,000)		716,000
Commodity:
Subtotal - Commodity	(513,000)		551,000		(1,025,000)		1,102,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(513,000)		551,000		(1,025,000)		1,102,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	(513,000)		551,000		(1,025,000)		1,102,000
Income Tax (Expense) Credit	(180,000)		193,000		(359,000)		386,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(513,000)		551,000		(1,025,000)		1,102,000
Income Tax (Expense) Credit	(180,000)		193,000		(359,000)		386,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Amortization of Pension and OPEB
Prior Service Cost (Credit)	(1,283,000)		(1,283,000)		(2,565,000)		(2,565,000)
Actuarial (Gains)/Losses	770,000		1,834,000		1,540,000		3,667,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	(513,000)		551,000		(1,025,000)		1,102,000
Income Tax (Expense) Credit	(180,000)		193,000		(359,000)		386,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(333,000)		358,000		(666,000)		716,000
Appalachian Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Commodity:
Vertically Integrated Utilities	0		2,000		0		22,000
Purchased Electricity for Resale	(64,000)		(31,000)		(526,000)		26,000
Other Operation Expense	0		(13,000)		(10,000)		(24,000)
Maintenance Expense	0		(2,000)		(20,000)		(18,000)
Property, Plant and Equipment	0		(5,000)		(17,000)		(19,000)
Regulatory Assets/(Liabilities), Net	(228,000)	[1]	(108,000)	[1]	(2,165,000)	[1]	181,000	[1]
Subtotal - Commodity	(292,000)		(157,000)		(2,738,000)		168,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(292,000)		(157,000)		(2,738,000)		168,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(157,000)		(2,738,000)		168,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(157,000)		(2,738,000)		168,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(157,000)		(2,738,000)		168,000
Appalachian Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	390,000		389,000		780,000		779,000
Interest Rate and Foreign Currency:
Interest Expense	390,000		389,000		780,000		779,000
Subtotal - Interest Rate and Foreign Currency	390,000		389,000		780,000		779,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	390,000		389,000		780,000		779,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	390,000		389,000		780,000		779,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	390,000		389,000		780,000		779,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	390,000		389,000		780,000		779,000
Indiana Michigan Power Co [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(15,041,000)		(25,584,000)		(15,509,000)		(28,883,000)
Change in Fair Value Recognized in AOCI	68,000		(41,000)		1,130,000		2,740,000
Amounts Reclassified from AOCI	325,000		537,000		(269,000)		1,055,000
Net Current Period Other Comprehensive Income	393,000		496,000		861,000		3,795,000
Ending Balance in AOCI	(14,648,000)		(25,088,000)		(14,648,000)		(25,088,000)
Commodity:
Vertically Integrated Utilities	506,997,000		490,301,000		1,121,840,000		980,904,000
Generation & Marketing Revenues	549,000		1,050,000		549,000		3,038,000
Purchased Electricity for Resale	27,086,000		36,814,000		32,448,000		78,626,000
Other Operation Expense	146,272,000		132,478,000		287,622,000		277,716,000
Maintenance Expense	54,246,000		50,238,000		102,811,000		95,752,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	49,446,000		45,696,000		99,477,000		86,598,000
Interest Expense	23,705,000		24,436,000		49,338,000		48,647,000
Income Tax (Expense) Credit	(12,627,000)		(19,886,000)		(50,942,000)		(41,149,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	23,705,000		24,436,000		49,338,000		48,647,000
Income Tax (Expense) Credit	(12,627,000)		(19,886,000)		(50,942,000)		(41,149,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(12,627,000)		(19,886,000)		(50,942,000)		(41,149,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Indiana Michigan Power Co [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	464,000		(8,614,000)		421,000		(8,790,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	43,000		175,000		86,000		351,000
Net Current Period Other Comprehensive Income	43,000		175,000		86,000		351,000
Ending Balance in AOCI	507,000		(8,439,000)		507,000		(8,439,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Indiana Michigan Power Co [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	61,000		236,000		46,000		(446,000)
Change in Fair Value Recognized in AOCI	68,000		(40,000)		1,130,000		492,000
Amounts Reclassified from AOCI	(129,000)		(49,000)		(1,176,000)		101,000
Net Current Period Other Comprehensive Income	(61,000)		(89,000)		(46,000)		593,000
Ending Balance in AOCI	0		147,000		0		147,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(129,000)		(49,000)		(1,176,000)		101,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(129,000)		(49,000)		(1,176,000)		101,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(129,000)		(49,000)		(1,176,000)		101,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(129,000)		(49,000)		(1,176,000)		101,000
Indiana Michigan Power Co [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(15,566,000)		(17,206,000)		(15,976,000)		(19,647,000)
Change in Fair Value Recognized in AOCI	0		(1,000)		0		2,248,000
Amounts Reclassified from AOCI	411,000		411,000		821,000		603,000
Net Current Period Other Comprehensive Income	411,000		410,000		821,000		2,851,000
Ending Balance in AOCI	(15,155,000)		(16,796,000)		(15,155,000)		(16,796,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	411,000		411,000		821,000		603,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	411,000		411,000		821,000		603,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	411,000		411,000		821,000		603,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	411,000		411,000		821,000		603,000
Indiana Michigan Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	325,000		537,000		(269,000)		1,055,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	325,000		537,000		(269,000)		1,055,000
Indiana Michigan Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	282,000		362,000		(355,000)		704,000
Commodity:
Subtotal - Commodity	433,000		557,000		(547,000)		1,083,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	433,000		557,000		(547,000)		1,083,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	433,000		557,000		(547,000)		1,083,000
Income Tax (Expense) Credit	151,000		195,000		(192,000)		379,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	282,000		362,000		(355,000)		704,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	433,000		557,000		(547,000)		1,083,000
Income Tax (Expense) Credit	151,000		195,000		(192,000)		379,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	282,000		362,000		(355,000)		704,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	433,000		557,000		(547,000)		1,083,000
Income Tax (Expense) Credit	151,000		195,000		(192,000)		379,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	282,000		362,000		(355,000)		704,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	282,000		362,000		(355,000)		704,000
Indiana Michigan Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	43,000		175,000		86,000		351,000
Commodity:
Subtotal - Commodity	64,000		270,000		130,000		540,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	64,000		270,000		130,000		540,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	64,000		270,000		130,000		540,000
Income Tax (Expense) Credit	21,000		95,000		44,000		189,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	64,000		270,000		130,000		540,000
Income Tax (Expense) Credit	21,000		95,000		44,000		189,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Amortization of Pension and OPEB
Prior Service Cost (Credit)	(198,000)		(198,000)		(397,000)		(397,000)
Actuarial (Gains)/Losses	262,000		468,000		527,000		937,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	64,000		270,000		130,000		540,000
Income Tax (Expense) Credit	21,000		95,000		44,000		189,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	43,000		175,000		86,000		351,000
Indiana Michigan Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Ending Balance in AOCI	0		147,000		0		147,000
Commodity:
Vertically Integrated Utilities	0		32,000		0		84,000
Purchased Electricity for Resale	(95,000)		(81,000)		(812,000)		68,000
Other Operation Expense	0		(8,000)		(7,000)		(15,000)
Maintenance Expense	0		(2,000)		(7,000)		(9,000)
Property, Plant and Equipment	0		(3,000)		(10,000)		(10,000)
Regulatory Assets/(Liabilities), Net	(103,000)	[1]	(12,000)	[1]	(973,000)	[1]	38,000	[1]
Subtotal - Commodity	(198,000)		(74,000)		(1,809,000)		156,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(198,000)		(74,000)		(1,809,000)		156,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	(198,000)		(74,000)		(1,809,000)		156,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(198,000)		(74,000)		(1,809,000)		156,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(198,000)		(74,000)		(1,809,000)		156,000
Indiana Michigan Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	631,000		631,000		1,262,000		927,000
Interest Rate and Foreign Currency:
Interest Expense	631,000		631,000		1,262,000		927,000
Subtotal - Interest Rate and Foreign Currency	631,000		631,000		1,262,000		927,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	631,000		631,000		1,262,000		927,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	631,000		631,000		1,262,000		927,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	631,000		631,000		1,262,000		927,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	631,000		631,000		1,262,000		927,000
Ohio Power Co [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	6,631,000		(161,390,000)		7,079,000		(165,725,000)
Change in Fair Value Recognized in AOCI	0		(109,000)		0		993,000
Amounts Reclassified from AOCI	(343,000)		2,834,000		(791,000)		6,067,000
Net Current Period Other Comprehensive Income	(343,000)		2,725,000		(791,000)		7,060,000
Ending Balance in AOCI	6,288,000		(158,665,000)		6,288,000		(158,665,000)
Commodity:
Generation & Marketing Revenues	1,756,000		3,528,000		3,064,000		10,155,000
Purchased Electricity for Resale	64,059,000		37,158,000		143,189,000		80,343,000
Other Operation Expense	131,485,000		137,265,000		282,911,000		321,452,000
Maintenance Expense	48,590,000		72,997,000		83,241,000		147,292,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	51,485,000		102,346,000		110,184,000		194,670,000
Interest Expense	32,759,000		47,244,000		65,766,000		97,417,000
Income Tax (Expense) Credit	(35,842,000)		(11,376,000)		(69,894,000)		(81,172,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	32,759,000		47,244,000		65,766,000		97,417,000
Income Tax (Expense) Credit	(35,842,000)		(11,376,000)		(69,894,000)		(81,172,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(35,842,000)		(11,376,000)		(69,894,000)		(81,172,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Ohio Power Co [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	0		(169,639,000)		0		(172,908,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	0		3,270,000		0		6,539,000
Net Current Period Other Comprehensive Income	0		3,270,000		0		6,539,000
Ending Balance in AOCI	0		(166,369,000)		0		(166,369,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Ohio Power Co [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	0		494,000		105,000		(912,000)
Change in Fair Value Recognized in AOCI	0		(109,000)		0		993,000
Amounts Reclassified from AOCI	0		(96,000)		(105,000)		208,000
Net Current Period Other Comprehensive Income	0		(205,000)		(105,000)		1,201,000
Ending Balance in AOCI	0		289,000		0		289,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(96,000)		(105,000)		208,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(96,000)		(105,000)		208,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(96,000)		(105,000)		208,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(96,000)		(105,000)		208,000
Ohio Power Co [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	6,631,000		7,755,000		6,974,000		8,095,000
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	(343,000)		(340,000)		(686,000)		(680,000)
Net Current Period Other Comprehensive Income	(343,000)		(340,000)		(686,000)		(680,000)
Ending Balance in AOCI	6,288,000		7,415,000		6,288,000		7,415,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(340,000)		(686,000)		(680,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(340,000)		(686,000)		(680,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(340,000)		(686,000)		(680,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(340,000)		(686,000)		(680,000)
Ohio Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(343,000)		2,834,000		(791,000)		6,067,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		2,834,000		(791,000)		6,067,000
Ohio Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(343,000)		(436,000)		(791,000)		(472,000)
Commodity:
Subtotal - Commodity	(527,000)		(671,000)		(1,216,000)		(726,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(527,000)		(671,000)		(1,216,000)		(726,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(671,000)		(1,216,000)		(726,000)
Income Tax (Expense) Credit	(184,000)		(235,000)		(425,000)		(254,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(436,000)		(791,000)		(472,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(671,000)		(1,216,000)		(726,000)
Income Tax (Expense) Credit	(184,000)		(235,000)		(425,000)		(254,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(436,000)		(791,000)		(472,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(671,000)		(1,216,000)		(726,000)
Income Tax (Expense) Credit	(184,000)		(235,000)		(425,000)		(254,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(436,000)		(791,000)		(472,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(343,000)		(436,000)		(791,000)		(472,000)
Ohio Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	0		3,270,000		0		6,539,000
Commodity:
Subtotal - Commodity	0		5,030,000		0		10,059,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	0		5,030,000		0		10,059,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		5,030,000		0		10,059,000
Income Tax (Expense) Credit	0		1,760,000		0		3,520,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		5,030,000		0		10,059,000
Income Tax (Expense) Credit	0		1,760,000		0		3,520,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Amortization of Pension and OPEB
Prior Service Cost (Credit)	0		(1,469,000)		0		(2,937,000)
Actuarial (Gains)/Losses	0		6,499,000		0		12,996,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		5,030,000		0		10,059,000
Income Tax (Expense) Credit	0		1,760,000		0		3,520,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		3,270,000		0		6,539,000
Ohio Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Commodity:
Vertically Integrated Utilities	0		81,000		0		215,000
Purchased Electricity for Resale	0		(202,000)		0		180,000
Other Operation Expense	0		(19,000)		(11,000)		(37,000)
Maintenance Expense	0		(3,000)		(11,000)		(15,000)
Property, Plant and Equipment	0		(4,000)		(18,000)		(23,000)
Regulatory Assets/(Liabilities), Net					(122,000)	[1]	0	[1]
Subtotal - Commodity	0		(147,000)		(162,000)		320,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	0		(147,000)		(162,000)		320,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(147,000)		(162,000)		320,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(147,000)		(162,000)		320,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(147,000)		(162,000)		320,000
Ohio Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	(527,000)		(524,000)		(1,054,000)		(1,046,000)
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	(3,000)		1,000		(6,000)		3,000
Interest Expense	(524,000)		(525,000)		(1,048,000)		(1,049,000)
Subtotal - Interest Rate and Foreign Currency	(527,000)		(524,000)		(1,054,000)		(1,046,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(524,000)		(1,054,000)		(1,046,000)
Gains and Losses on Available-for-Sale Securities
Interest Expense	(524,000)		(525,000)		(1,048,000)		(1,049,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(524,000)		(1,054,000)		(1,046,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(527,000)		(524,000)		(1,054,000)		(1,046,000)
Public Service Co Of Oklahoma [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	5,512,000		6,314,000		5,758,000		6,481,000
Change in Fair Value Recognized in AOCI	0		(60,000)		0		(24,000)
Amounts Reclassified from AOCI	(190,000)		(194,000)		(436,000)		(397,000)
Net Current Period Other Comprehensive Income	(190,000)		(254,000)		(436,000)		(421,000)
Ending Balance in AOCI	5,322,000		6,060,000		5,322,000		6,060,000
Commodity:
Vertically Integrated Utilities	316,524,000		317,302,000		613,234,000		577,205,000
Generation & Marketing Revenues	1,437,000		1,692,000		1,515,000		2,244,000
Purchased Electricity for Resale	104,604,000		58,835,000		184,295,000		123,490,000
Other Operation Expense	62,785,000		53,659,000		121,496,000		101,466,000
Maintenance Expense	29,678,000		24,753,000		54,423,000		53,325,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	24,607,000		24,078,000		48,589,000		48,258,000
Interest Expense	13,779,000		13,259,000		27,096,000		26,599,000
Income Tax (Expense) Credit	(13,244,000)		(17,927,000)		(18,233,000)		(26,561,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Gains and Losses on Available-for-Sale Securities
Interest Expense	13,779,000		13,259,000		27,096,000		26,599,000
Income Tax (Expense) Credit	(13,244,000)		(17,927,000)		(18,233,000)		(26,561,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(13,244,000)		(17,927,000)		(18,233,000)		(26,561,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Public Service Co Of Oklahoma [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	0		44,000		57,000		21,000
Change in Fair Value Recognized in AOCI	0		(61,000)		0		(25,000)
Amounts Reclassified from AOCI	0		(4,000)		(57,000)		(17,000)
Net Current Period Other Comprehensive Income	0		(65,000)		(57,000)		(42,000)
Ending Balance in AOCI	0		(21,000)		0		(21,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(4,000)		(57,000)		(17,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(4,000)		(57,000)		(17,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(4,000)		(57,000)		(17,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(4,000)		(57,000)		(17,000)
Public Service Co Of Oklahoma [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	5,512,000		6,270,000		5,701,000		6,460,000
Change in Fair Value Recognized in AOCI	0		1,000		0		1,000
Amounts Reclassified from AOCI	(190,000)		(190,000)		(379,000)		(380,000)
Net Current Period Other Comprehensive Income	(190,000)		(189,000)		(379,000)		(379,000)
Ending Balance in AOCI	5,322,000		6,081,000		5,322,000		6,081,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(190,000)		(379,000)		(380,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(190,000)		(379,000)		(380,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(190,000)		(379,000)		(380,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(190,000)		(379,000)		(380,000)
Public Service Co Of Oklahoma [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(190,000)		(194,000)		(436,000)		(397,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(190,000)		(194,000)		(436,000)		(397,000)
Public Service Co Of Oklahoma [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	(292,000)		(298,000)		(672,000)		(610,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(292,000)		(298,000)		(672,000)		(610,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(298,000)		(672,000)		(610,000)
Income Tax (Expense) Credit	(102,000)		(104,000)		(236,000)		(213,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(298,000)		(672,000)		(610,000)
Income Tax (Expense) Credit	(102,000)		(104,000)		(236,000)		(213,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(298,000)		(672,000)		(610,000)
Income Tax (Expense) Credit	(102,000)		(104,000)		(236,000)		(213,000)
Public Service Co Of Oklahoma [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Commodity:
Other Operation Expense	0		(6,000)		(8,000)		(15,000)
Maintenance Expense					(9,000)		(4,000)
Property, Plant and Equipment					(13,000)		(7,000)
Regulatory Assets/(Liabilities), Net					(58,000)	[1]	0	[1]
Subtotal - Commodity	0		(6,000)		(88,000)		(26,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	0		(6,000)		(88,000)		(26,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(6,000)		(88,000)		(26,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(6,000)		(88,000)		(26,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(6,000)		(88,000)		(26,000)
Public Service Co Of Oklahoma [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	(292,000)		(292,000)		(584,000)		(584,000)
Interest Rate and Foreign Currency:
Interest Expense	(292,000)		(292,000)		(584,000)		(584,000)
Subtotal - Interest Rate and Foreign Currency	(292,000)		(292,000)		(584,000)		(584,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(292,000)		(584,000)		(584,000)
Gains and Losses on Available-for-Sale Securities
Interest Expense	(292,000)		(292,000)		(584,000)		(584,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(292,000)		(584,000)		(584,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	(292,000)		(292,000)		(584,000)		(584,000)
Southwestern Electric Power Co [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(8,176,000)		(17,327,000)		(8,444,000)		(17,860,000)
Change in Fair Value Recognized in AOCI	0		(71,000)		0		(27,000)
Amounts Reclassified from AOCI	332,000		497,000		600,000		986,000
Net Current Period Other Comprehensive Income	332,000		426,000		600,000		959,000
Ending Balance in AOCI	(7,844,000)		(16,901,000)		(7,844,000)		(16,901,000)
Commodity:
Vertically Integrated Utilities	444,652,000		408,852,000		871,279,000		790,129,000
Generation & Marketing Revenues	684,000		391,000		1,049,000		722,000
Purchased Electricity for Resale	40,255,000		43,008,000		101,420,000		82,768,000
Other Operation Expense	69,304,000		60,795,000		137,841,000		120,243,000
Maintenance Expense	33,668,000		32,280,000		64,079,000		60,071,000
Interest Rate and Foreign Currency:
Depreciation and Amortization Expense	45,864,000		45,732,000		91,525,000		90,614,000
Interest Expense	31,738,000		33,547,000		63,614,000		67,537,000
Income Tax (Expense) Credit	(17,045,000)		(15,326,000)		(29,210,000)		(22,122,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	31,738,000		33,547,000		63,614,000		67,537,000
Income Tax (Expense) Credit	(17,045,000)		(15,326,000)		(29,210,000)		(22,122,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Amortization of Pension and OPEB
Income Tax (Expense) Credit	(17,045,000)		(15,326,000)		(29,210,000)		(22,122,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Southwestern Electric Power Co [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	4,560,000		(2,374,000)		4,794,000		(2,311,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	(235,000)		(64,000)		(469,000)		(127,000)
Net Current Period Other Comprehensive Income	(235,000)		(64,000)		(469,000)		(127,000)
Ending Balance in AOCI	4,325,000		(2,438,000)		4,325,000		(2,438,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Southwestern Electric Power Co [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	0		51,000		66,000		22,000
Change in Fair Value Recognized in AOCI	0		(71,000)		0		(27,000)
Amounts Reclassified from AOCI	0		(6,000)		(66,000)		(21,000)
Net Current Period Other Comprehensive Income	0		(77,000)		(66,000)		(48,000)
Ending Balance in AOCI	0		(26,000)		0		(26,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(6,000)		(66,000)		(21,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(6,000)		(66,000)		(21,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(6,000)		(66,000)		(21,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	0		(6,000)		(66,000)		(21,000)
Southwestern Electric Power Co [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance in AOCI	(12,736,000)		(15,004,000)		(13,304,000)		(15,571,000)
Change in Fair Value Recognized in AOCI	0		0		0		0
Amounts Reclassified from AOCI	567,000		567,000		1,135,000		1,134,000
Net Current Period Other Comprehensive Income	567,000		567,000		1,135,000		1,134,000
Ending Balance in AOCI	(12,169,000)		(14,437,000)		(12,169,000)		(14,437,000)
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		567,000		1,135,000		1,134,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		567,000		1,135,000		1,134,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		567,000		1,135,000		1,134,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		567,000		1,135,000		1,134,000
Southwestern Electric Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	332,000		497,000		600,000		986,000
Interest Rate and Foreign Currency:
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Amortization of Pension and OPEB
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	332,000		497,000		600,000		986,000
Southwestern Electric Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	567,000		561,000		1,069,000		1,113,000
Commodity:
Subtotal - Commodity	872,000		864,000		1,643,000		1,713,000
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	872,000		864,000		1,643,000		1,713,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	872,000		864,000		1,643,000		1,713,000
Income Tax (Expense) Credit	305,000		303,000		574,000		600,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		561,000		1,069,000		1,113,000
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	872,000		864,000		1,643,000		1,713,000
Income Tax (Expense) Credit	305,000		303,000		574,000		600,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		561,000		1,069,000		1,113,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	872,000		864,000		1,643,000		1,713,000
Income Tax (Expense) Credit	305,000		303,000		574,000		600,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		561,000		1,069,000		1,113,000
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	567,000		561,000		1,069,000		1,113,000
Southwestern Electric Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Pension and OPEB [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts Reclassified from AOCI	(235,000)		(64,000)		(469,000)		(127,000)
Commodity:
Subtotal - Commodity	(362,000)		(99,000)		(722,000)		(196,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	(362,000)		(99,000)		(722,000)		(196,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	(362,000)		(99,000)		(722,000)		(196,000)
Income Tax (Expense) Credit	(127,000)		(35,000)		(253,000)		(69,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	(362,000)		(99,000)		(722,000)		(196,000)
Income Tax (Expense) Credit	(127,000)		(35,000)		(253,000)		(69,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Amortization of Pension and OPEB
Prior Service Cost (Credit)	(477,000)		(447,000)		(955,000)		(892,000)
Actuarial (Gains)/Losses	115,000		348,000		233,000		696,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	(362,000)		(99,000)		(722,000)		(196,000)
Income Tax (Expense) Credit	(127,000)		(35,000)		(253,000)		(69,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Reclassifications from AOCI, Net of Income Tax (Expense) Credit	(235,000)		(64,000)		(469,000)		(127,000)
Southwestern Electric Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Commodity [Member] | Cash Flow Hedges [Member]
Commodity:
Other Operation Expense	0		(6,000)		(13,000)		(16,000)
Maintenance Expense	0		(1,000)		(10,000)		(7,000)
Property, Plant and Equipment	0		(1,000)		(11,000)		(8,000)
Regulatory Assets/(Liabilities), Net					(67,000)	[1]	0	[1]
Subtotal - Commodity	0		(8,000)		(101,000)		(31,000)
Interest Rate and Foreign Currency:
Subtotal - Interest Rate and Foreign Currency	0		(8,000)		(101,000)		(31,000)
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(8,000)		(101,000)		(31,000)
Gains and Losses on Available-for-Sale Securities
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(8,000)		(101,000)		(31,000)
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	0		(8,000)		(101,000)		(31,000)
Southwestern Electric Power Co [Member] | Reclassifications from Accumulated Other Comprehensive Income [Member] | Interest Rate and Foreign Currency [Member] | Cash Flow Hedges [Member]
Commodity:
Subtotal - Commodity	872,000		872,000		1,744,000		1,744,000
Interest Rate and Foreign Currency:
Interest Expense	872,000		872,000		1,744,000		1,744,000
Subtotal - Interest Rate and Foreign Currency	872,000		872,000		1,744,000		1,744,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	872,000		872,000		1,744,000		1,744,000
Gains and Losses on Available-for-Sale Securities
Interest Expense	872,000		872,000		1,744,000		1,744,000
Reclassifications from AOCI, before Income Tax (Expense) Credit	872,000		872,000		1,744,000		1,744,000
Amortization of Pension and OPEB
Reclassifications from AOCI, before Income Tax (Expense) Credit	$ 872,000		$ 872,000		$ 1,744,000		$ 1,744,000

[1] Represents realized gains and losses subject to regulatory accounting treatment recorded as either current or noncurrent on the condensed balance sheets.