Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Cash and cash equivalents:
Cash	$ 81,468	$ 76,290
Temporary cash investments	612,970	1,218,182
Total cash and cash equivalents	694,438	1,294,472
Securitization recovery trust account	50,304	43,044
Accounts receivable:
Customer	568,558	602,796
Allowance for doubtful accounts	(31,159)	(31,777)
Other	166,186	161,662
Accrued unbilled revenues	298,283	302,901
Total accounts receivable	1,001,868	1,035,582
Deferred fuel costs	209,776	64,659
Accumulated deferred income taxes	9,856	8,472
Fuel inventory - at average cost	202,132	207,520
Materials and supplies - at average cost	894,756	866,908
Deferred nuclear refueling outage costs	231,031	218,423
System agreement cost equalization	36,800	52,160
Prepaid taxes	0	301,807
Prepayments and other	291,742	246,036
TOTAL	3,622,703	4,339,083
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	44,876	40,697
Decommissioning trust funds	3,788,031	3,595,716
Non-utility property - at cost (less accumulated depreciation)	260,436	257,847
Other	416,423	405,946
TOTAL	4,509,766	4,300,206
PROPERTY, PLANT AND EQUIPMENT
Electric	39,385,524	37,153,061
Property under capital lease	809,449	800,078
Natural gas	343,550	330,608
Construction work in progress	1,779,723	1,661,560
Nuclear fuel	1,546,167	1,377,962
TOTAL PROPERTY, PLANT AND EQUIPMENT	43,864,413	41,323,269
Less - accumulated depreciation and amortization	18,255,128	17,474,914
PROPERTY, PLANT AND EQUIPMENT - NET	25,609,285	23,848,355
Regulatory assets:
Regulatory asset for income taxes - net	799,006	845,725
Other regulatory assets (includes securitization property of $1,009,103 as of December 31, 2011 and $882,346 as of December 31, 2010)	4,636,871	3,838,237
Deferred fuel costs	172,202	172,202
Goodwill	377,172	377,172
Accumulated deferred income taxes	19,003	54,523
Other	955,691	909,773
TOTAL	6,959,945	6,197,632
TOTAL ASSETS	40,701,699	38,685,276
CURRENT LIABILITIES
Currently maturing long-term debt	2,192,733	299,548
Notes payable	108,331	154,135
Accounts payable	1,069,096	1,181,099
Customer deposits	351,741	335,058
Taxes accrued	278,235	0
Accumulated deferred income taxes	99,929	49,307
Interest accrued	183,512	217,685
Deferred fuel costs	255,839	166,409
Obligations under capital leases	3,631	3,388
Pension and other postretirement liabilities	44,031	39,862
System agreement cost equalization	80,090	52,160
Other	283,531	277,598
TOTAL	4,950,699	2,776,249
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	8,096,452	8,573,646
Accumulated deferred investment tax credits	284,747	292,330
Obligations under capital leases	38,421	42,078
Other regulatory liabilities	728,193	539,026
Decommissioning and asset retirement cost liabilities	3,296,570	3,148,479
Accumulated provisions	385,512	395,250
Pension and other postretirement liabilities	3,133,657	2,175,364
Long-term debt (includes securitization bonds of $1,070,556 as of December 31, 2011 and $931,131 as of December 31, 2010)	10,043,713	11,317,157
Other	501,954	618,559
TOTAL	26,509,219	27,101,889
Commitments and Contingencies
Subsidiaries' preferred stock without sinking fund	186,511	216,738
Common Shareholders' Equity:
Common stock, $.01 par value, authorized 500,000,000 shares; issued 254,752,788 shares in 2011 and in 2010	2,548	2,548
Paid-in capital	5,360,682	5,367,474
Retained earnings	9,446,960	8,689,401
Accumulated other comprehensive loss	(168,452)	(38,212)
Less - treasury stock, at cost (78,396,988 shares in 2011 and 76,006,920 shares in 2010)	5,680,468	5,524,811
Total common shareholders' equity	8,961,270	8,496,400
Subsidiaries' preferred stock without sinking fund	94,000	94,000
TOTAL	9,055,270	8,590,400
TOTAL LIABILITIES AND EQUITY	$ 40,701,699	$ 38,685,276