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Condensed Consolidated Balance Sheets (Unaudited) (USD $)
Sep. 30, 2011
Dec. 31, 2010
Current Assets:  
Cash and cash equivalents$ 1,516,000,000$ 447,000,000
Restricted cash and cash equivalents9,000,00068,000,000
Receivables --  
Customer accounts receivable1,401,000,0001,140,000,000
Unbilled revenues449,000,000420,000,000
Under recovered regulatory clause revenues210,000,000209,000,000
Other accounts and notes receivable250,000,000285,000,000
Accumulated provision for uncollectible accounts(30,000,000)(25,000,000)
Fossil fuel stock, at average cost1,076,000,0001,308,000,000
Materials and supplies, at average cost854,000,000827,000,000
Vacation pay150,000,000151,000,000
Prepaid expenses319,000,000784,000,000
Other regulatory assets, current191,000,000210,000,000
Other current assets100,000,00059,000,000
Total current assets6,495,000,0005,883,000,000
Property, Plant, and Equipment:  
In service58,079,000,00056,731,000,000
Less accumulated depreciation20,891,000,00020,174,000,000
Plant in service, net of depreciation37,188,000,00036,557,000,000
Other utility plant, net57,000,0000
Nuclear fuel, at amortized cost743,000,000670,000,000
Construction work in progress5,809,000,0004,775,000,000
Total property, plant, and equipment43,797,000,00042,002,000,000
Other Property and Investments:  
Nuclear decommissioning trusts, at fair value1,159,000,0001,370,000,000
Leveraged leases641,000,000624,000,000
Miscellaneous property and investments256,000,000277,000,000
Total other property and investments2,056,000,0002,271,000,000
Deferred Charges and Other Assets:  
Deferred charges related to income taxes1,361,000,0001,280,000,000
Prepaid pension costs137,000,00088,000,000
Unamortized debt issuance expense163,000,000178,000,000
Unamortized loss on reacquired debt283,000,000274,000,000
Deferred under recovered regulatory clause revenues64,000,000218,000,000
Other regulatory assets, deferred2,496,000,0002,402,000,000
Other deferred charges and assets491,000,000436,000,000
Total deferred charges and other assets4,995,000,0004,876,000,000
Total Assets57,343,000,00055,032,000,000
Current Liabilities:  
Securities due within one year1,891,000,0001,301,000,000
Notes payable137,000,0001,297,000,000
Accounts payable1,355,000,0001,275,000,000
Customer deposits340,000,000332,000,000
Accrued taxes --  
Accrued income taxes46,000,0008,000,000
Unrecognized tax benefits22,000,000187,000,000
Other accrued taxes458,000,000440,000,000
Accrued interest245,000,000225,000,000
Accrued vacation pay191,000,000194,000,000
Accrued compensation349,000,000438,000,000
Liabilities from risk management activities136,000,000152,000,000
Other regulatory liabilities, current107,000,00088,000,000
Other current liabilities380,000,000535,000,000
Total current liabilities5,657,000,0006,472,000,000
Long-term Debt18,733,000,00018,154,000,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes8,613,000,0007,554,000,000
Deferred credits related to income taxes223,000,000235,000,000
Accumulated deferred investment tax credits579,000,000509,000,000
Employee benefit obligations1,608,000,0001,580,000,000
Asset retirement obligations1,307,000,0001,257,000,000
Other cost of removal obligations1,170,000,0001,158,000,000
Other regulatory liabilities, deferred255,000,000312,000,000
Other deferred credits and liabilities483,000,000517,000,000
Total deferred credits and other liabilities14,238,000,00013,122,000,000
Total Liabilities38,628,000,00037,748,000,000
Redeemable Preferred Stock of Subsidiaries375,000,000375,000,000
Common Stockholders' Equity:  
Common stock4,312,000,0004,219,000,000
Paid-in capital4,302,000,0003,702,000,000
Treasury, at cost(16,000,000)(15,000,000)
Retained earnings9,116,000,0008,366,000,000
Accumulated other comprehensive loss(81,000,000)(70,000,000)
Total Common Stockholders' Equity17,633,000,00016,202,000,000
Preferred and Preference Stock of Subsidiaries707,000,000707,000,000
Total Stockholders' Equity18,340,000,00016,909,000,000
Total Liabilities and Stockholders' Equity57,343,000,00055,032,000,000
Alabama Power [Member]
  
Current Assets:  
Cash and cash equivalents576,000,000154,000,000
Restricted cash and cash equivalents3,000,00018,000,000
Receivables --  
Customer accounts receivable419,000,000362,000,000
Unbilled revenues126,000,000153,000,000
Under recovered regulatory clause revenues11,000,0005,000,000
Other accounts and notes receivable48,000,00035,000,000
Affiliated companies47,000,00057,000,000
Accumulated provision for uncollectible accounts(10,000,000)(10,000,000)
Fossil fuel stock, at average cost316,000,000391,000,000
Materials and supplies, at average cost355,000,000346,000,000
Vacation pay55,000,00055,000,000
Prepaid expenses77,000,000208,000,000
Other regulatory assets, current33,000,00038,000,000
Other current assets11,000,00010,000,000
Total current assets2,067,000,0001,822,000,000
Property, Plant, and Equipment:  
In service20,530,000,00019,966,000,000
Less accumulated depreciation7,247,000,0006,931,000,000
Plant in service, net of depreciation13,283,000,00013,035,000,000
Nuclear fuel, at amortized cost316,000,000283,000,000
Construction work in progress485,000,000547,000,000
Total property, plant, and equipment14,084,000,00013,865,000,000
Other Property and Investments:  
Equity investments in unconsolidated subsidiaries62,000,00064,000,000
Nuclear decommissioning trusts, at fair value502,000,000552,000,000
Miscellaneous property and investments73,000,00071,000,000
Total other property and investments637,000,000687,000,000
Deferred Charges and Other Assets:  
Deferred charges related to income taxes528,000,000488,000,000
Prepaid pension costs287,000,000257,000,000
Deferred under recovered regulatory clause revenues39,000,0004,000,000
Other regulatory assets, deferred680,000,000675,000,000
Other deferred charges and assets193,000,000196,000,000
Total deferred charges and other assets1,727,000,0001,620,000,000
Total Assets18,515,000,00017,994,000,000
Current Liabilities:  
Securities due within one year0200,000,000
Affiliated195,000,000210,000,000
Accounts payable198,000,000273,000,000
Customer deposits85,000,00086,000,000
Accrued taxes --  
Accrued income taxes13,000,0002,000,000
Other accrued taxes103,000,00032,000,000
Accrued interest71,000,00063,000,000
Accrued vacation pay45,000,00045,000,000
Accrued compensation73,000,00099,000,000
Liabilities from risk management activities24,000,00031,000,000
Over recovered regulatory clause revenues25,000,00022,000,000
Other current liabilities35,000,00041,000,000
Total current liabilities867,000,0001,104,000,000
Long-term Debt6,232,000,0005,987,000,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes3,148,000,0002,747,000,000
Deferred credits related to income taxes81,000,00085,000,000
Accumulated deferred investment tax credits151,000,000157,000,000
Employee benefit obligations323,000,000311,000,000
Asset retirement obligations544,000,000520,000,000
Other cost of removal obligations702,000,000701,000,000
Other regulatory liabilities, deferred92,000,000217,000,000
Other deferred credits and liabilities92,000,00087,000,000
Total deferred credits and other liabilities5,133,000,0004,825,000,000
Total Liabilities12,232,000,00011,916,000,000
Redeemable Preferred Stock342,000,000342,000,000
Preference Stock343,000,000343,000,000
Common Stockholders' Equity:  
Common stock1,222,000,0001,222,000,000
Paid-in capital2,177,000,0002,156,000,000
Retained earnings2,213,000,0002,022,000,000
Accumulated other comprehensive loss(14,000,000)(7,000,000)
Total Common Stockholders' Equity5,598,000,0005,393,000,000
Total Liabilities and Stockholders' Equity18,515,000,00017,994,000,000
Georgia Power [Member]
  
Current Assets:  
Cash and cash equivalents66,000,0008,000,000
Receivables --  
Customer accounts receivable764,000,000580,000,000
Unbilled revenues235,000,000172,000,000
Under recovered regulatory clause revenues189,000,000184,000,000
Joint owner accounts receivable52,000,00060,000,000
Other accounts and notes receivable58,000,00067,000,000
Affiliated companies28,000,00021,000,000
Accumulated provision for uncollectible accounts(17,000,000)(11,000,000)
Fossil fuel stock, at average cost509,000,000624,000,000
Materials and supplies, at average cost379,000,000371,000,000
Vacation pay77,000,00078,000,000
Prepaid income taxes1,000,00099,000,000
Other regulatory assets, current94,000,000105,000,000
Other current assets144,000,00080,000,000
Total current assets2,579,000,0002,438,000,000
Property, Plant, and Equipment:  
In service26,918,000,00026,397,000,000
Less accumulated depreciation10,198,000,0009,966,000,000
Plant in service, net of depreciation16,720,000,00016,431,000,000
Other utility plant, net57,000,0000
Nuclear fuel, at amortized cost427,000,000386,000,000
Construction work in progress3,774,000,0003,287,000,000
Total property, plant, and equipment20,978,000,00020,104,000,000
Other Property and Investments:  
Equity investments in unconsolidated subsidiaries63,000,00070,000,000
Nuclear decommissioning trusts, at fair value657,000,000818,000,000
Miscellaneous property and investments39,000,00042,000,000
Total other property and investments759,000,000930,000,000
Deferred Charges and Other Assets:  
Deferred charges related to income taxes747,000,000723,000,000
Prepaid pension costs122,000,00091,000,000
Deferred under recovered regulatory clause revenues25,000,000214,000,000
Other regulatory assets, deferred1,282,000,0001,207,000,000
Other deferred charges and assets213,000,000207,000,000
Total deferred charges and other assets2,389,000,0002,442,000,000
Total Assets26,705,000,00025,914,000,000
Current Liabilities:  
Securities due within one year254,000,000415,000,000
Notes payable1,000,000576,000,000
Affiliated328,000,000243,000,000
Accounts payable580,000,000574,000,000
Customer deposits206,000,000198,000,000
Accrued taxes --  
Accrued income taxes105,000,0001,000,000
Unrecognized tax benefits9,000,000187,000,000
Other accrued taxes252,000,000328,000,000
Accrued interest117,000,00094,000,000
Accrued vacation pay56,000,00058,000,000
Accrued compensation100,000,000109,000,000
Liabilities from risk management activities53,000,00077,000,000
Other cost of removal obligations, current31,000,00031,000,000
Nuclear decommissioning trust securities lending collateral37,000,000144,000,000
Other current liabilities162,000,000134,000,000
Total current liabilities2,291,000,0003,169,000,000
Long-term Debt8,422,000,0007,931,000,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes4,256,000,0003,718,000,000
Deferred credits related to income taxes124,000,000129,000,000
Accumulated deferred investment tax credits222,000,000229,000,000
Employee benefit obligations716,000,000684,000,000
Asset retirement obligations729,000,000705,000,000
Other cost of removal obligations123,000,000131,000,000
Other deferred credits and liabilities237,000,000211,000,000
Total deferred credits and other liabilities6,407,000,0005,807,000,000
Total Liabilities17,120,000,00016,907,000,000
Redeemable Preferred Stock45,000,00045,000,000
Preference Stock221,000,000221,000,000
Common Stockholders' Equity:  
Common stock398,000,000398,000,000
Paid-in capital5,504,000,0005,291,000,000
Retained earnings3,426,000,0003,063,000,000
Accumulated other comprehensive loss(9,000,000)(11,000,000)
Total Common Stockholders' Equity9,319,000,0008,741,000,000
Total Liabilities and Stockholders' Equity26,705,000,00025,914,000,000
Gulf Power [Member]
  
Current Assets:  
Cash and cash equivalents17,330,00016,434,000
Receivables --  
Customer accounts receivable91,252,00074,377,000
Unbilled revenues58,813,00064,697,000
Under recovered regulatory clause revenues9,840,00019,690,000
Other accounts and notes receivable14,829,0009,867,000
Affiliated companies15,429,0007,859,000
Accumulated provision for uncollectible accounts(1,863,000)(2,014,000)
Fossil fuel stock, at average cost128,283,000167,155,000
Materials and supplies, at average cost51,111,00044,729,000
Prepaid expenses22,342,00058,412,000
Other regulatory assets, current22,491,00020,278,000
Other current assets1,838,0003,585,000
Total current assets431,695,000485,069,000
Property, Plant, and Equipment:  
In service3,813,901,0003,634,255,000
Less accumulated depreciation1,108,710,0001,069,006,000
Plant in service, net of depreciation2,705,191,0002,565,249,000
Construction work in progress231,156,000209,808,000
Total property, plant, and equipment2,936,347,0002,775,057,000
Other Property and Investments:  
Total other property and investments16,343,00016,352,000
Deferred Charges and Other Assets:  
Deferred charges related to income taxes52,219,00046,357,000
Prepaid pension costs9,414,0007,291,000
Other regulatory assets, deferred259,136,000219,877,000
Other deferred charges and assets35,318,00034,936,000
Total deferred charges and other assets356,087,000308,461,000
Total Assets3,740,472,0003,584,939,000
Current Liabilities:  
Securities due within one year0110,000,000
Notes payable36,577,00093,183,000
Affiliated62,464,00046,342,000
Accounts payable53,842,00068,840,000
Customer deposits35,859,00035,600,000
Accrued taxes --  
Accrued income taxes8,587,0003,835,000
Other accrued taxes25,014,0007,944,000
Accrued interest18,175,00013,393,000
Accrued compensation10,169,00014,459,000
Liabilities from risk management activities10,205,0009,415,000
Other regulatory liabilities, current33,080,00027,060,000
Other current liabilities21,015,00019,766,000
Total current liabilities314,987,000449,837,000
Long-term Debt1,235,344,0001,114,398,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes454,530,000382,876,000
Accumulated deferred investment tax credits7,097,0008,109,000
Employee benefit obligations76,695,00076,654,000
Other cost of removal obligations213,113,000204,408,000
Other regulatory liabilities, deferred43,399,00042,915,000
Other deferred credits and liabilities164,752,000132,708,000
Total deferred credits and other liabilities959,586,000847,670,000
Total Liabilities2,509,917,0002,411,905,000
Preference Stock97,998,00097,998,000
Common Stockholders' Equity:  
Common stock353,060,000303,060,000
Paid-in capital541,706,000538,375,000
Retained earnings240,088,000236,328,000
Accumulated other comprehensive loss(2,297,000)(2,727,000)
Total Common Stockholders' Equity1,132,557,0001,075,036,000
Total Liabilities and Stockholders' Equity3,740,472,0003,584,939,000
Mississippi Power [Member]
  
Current Assets:  
Cash and cash equivalents117,627,000160,779,000
Restricted cash and cash equivalents050,000,000
Receivables --  
Customer accounts receivable45,269,00037,532,000
Unbilled revenues28,753,00031,010,000
Other accounts and notes receivable7,765,00011,220,000
Affiliated companies22,282,00017,837,000
Accumulated provision for uncollectible accounts(709,000)(638,000)
Fossil fuel stock, at average cost109,895,000112,240,000
Materials and supplies, at average cost30,114,00028,671,000
Prepaid income taxes71,749,00059,596,000
Other regulatory assets, current59,143,00063,896,000
Other current assets28,602,00019,057,000
Total current assets520,490,000591,200,000
Property, Plant, and Equipment:  
In service2,445,523,0002,392,477,000
Less accumulated depreciation988,073,000971,559,000
Plant in service, net of depreciation1,457,450,0001,420,918,000
Construction work in progress676,762,000274,585,000
Total property, plant, and equipment2,134,212,0001,695,503,000
Other Property and Investments:  
Total other property and investments6,231,0005,900,000
Deferred Charges and Other Assets:  
Deferred charges related to income taxes28,988,00018,065,000
Other regulatory assets, deferred128,049,000132,420,000
Other deferred charges and assets22,086,00033,233,000
Total deferred charges and other assets179,123,000183,718,000
Total Assets2,840,056,0002,476,321,000
Current Liabilities:  
Securities due within one year241,002,000256,437,000
Affiliated54,353,00051,887,000
Accounts payable148,391,00059,295,000
Customer deposits13,445,00012,543,000
Accrued taxes --  
Accrued income taxes9,636,0004,356,000
Other accrued taxes42,964,00051,709,000
Accrued interest5,502,0005,933,000
Accrued compensation11,563,00016,076,000
Liabilities from risk management activities43,179,00027,525,000
Other regulatory liabilities, current5,523,0006,177,000
Over recovered regulatory clause liabilities59,292,00077,046,000
Other current liabilities18,651,00020,115,000
Total current liabilities653,501,000589,099,000
Long-term Debt461,531,000462,032,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes316,675,000281,967,000
Deferred credits related to income taxes11,660,00011,792,000
Accumulated deferred investment tax credits84,449,00033,678,000
Employee benefit obligations115,282,000113,964,000
Other cost of removal obligations121,972,000111,614,000
Other regulatory liabilities, deferred60,574,00058,814,000
Other deferred credits and liabilities30,162,00043,213,000
Total deferred credits and other liabilities740,774,000655,042,000
Total Liabilities1,855,806,0001,706,173,000
Redeemable Preferred Stock32,780,00032,780,000
Common Stockholders' Equity:  
Common stock37,691,00037,691,000
Paid-in capital594,677,000392,790,000
Retained earnings328,179,000306,885,000
Accumulated other comprehensive loss(9,077,000)2,000
Total Common Stockholders' Equity951,470,000737,368,000
Total Liabilities and Stockholders' Equity2,840,056,0002,476,321,000
Southern Power [Member]
  
Current Assets:  
Cash and cash equivalents205,509,00014,204,000
Receivables --  
Customer accounts receivable73,979,00077,033,000
Other accounts and notes receivable2,062,0001,979,000
Affiliated companies50,371,00019,673,000
Fossil fuel stock, at average cost13,529,00013,663,000
Materials and supplies, at average cost35,332,00033,934,000
Prepaid service agreements - current34,087,00041,627,000
Prepaid income taxes320,00053,860,000
Prepaid expenses3,941,0004,161,000
Assets from risk management activities663,0002,160,000
Other current assets019,000
Total current assets419,793,000262,313,000
Property, Plant, and Equipment:  
In service3,162,965,0003,143,919,000
Less accumulated depreciation628,547,000536,107,000
Plant in service, net of depreciation2,534,418,0002,607,812,000
Construction work in progress619,655,000427,788,000
Total property, plant, and equipment3,154,073,0003,035,600,000
Other Property and Investments:  
Goodwill1,839,0001,839,000
Other intangible assets, net of amortization of $1,280 and $693 at September 30, 2011 and September 30, 2010, respectively47,839,00048,426,000
Total other property and investments49,678,00050,265,000
Deferred Charges and Other Assets:  
Prepaid long-term service agreements105,953,00069,740,000
Other deferred charges and assets -- affiliated3,091,0003,275,000
Other deferred charges and assets24,611,00016,541,000
Total deferred charges and other assets133,655,00089,556,000
Total Assets3,757,199,0003,437,734,000
Current Liabilities:  
Securities due within one year575,510,0000
Notes payable -- affiliated065,883,000
Notes payable48,884,000203,904,000
Affiliated64,739,00069,783,000
Accounts payable46,078,00045,985,000
Accrued taxes --  
Accrued income taxes17,472,000812,000
Other accrued taxes12,619,0002,775,000
Accrued interest18,375,00029,977,000
Liabilities from risk management activities5,035,0005,773,000
Other current liabilities5,516,0003,923,000
Total current liabilities794,228,000428,815,000
Long-term Debt1,023,967,0001,302,619,000
Deferred Credits and Other Liabilities:  
Accumulated deferred income taxes312,861,000307,989,000
Deferred convertible investment tax credits113,280,00080,401,000
Deferred capacity revenues -- affiliated38,114,00030,533,000
Other deferred credits and liabilities -- affiliated3,859,0004,635,000
Other deferred credits and liabilities3,081,00016,203,000
Total deferred credits and other liabilities471,195,000439,761,000
Total Liabilities2,289,390,0002,171,195,000
Redeemable Noncontrolling Interest3,630,0003,319,000
Common Stockholders' Equity:  
Common stock  
Paid-in capital1,026,565,000900,969,000
Retained earnings446,285,000376,270,000
Accumulated other comprehensive loss(8,671,000)(14,019,000)
Total Common Stockholders' Equity1,464,179,0001,263,220,000
Total Liabilities and Stockholders' Equity$ 3,757,199,000$ 3,437,734,000