XML 37 R5.htm IDEA: XBRL DOCUMENT v2.4.0.6
CONSOLIDATED STATEMENTS OF CHANGES IN PROPRIETARY CAPITAL (UNAUDITED) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Balance at Beginning of Period $ 5,094 $ 5,138 $ 5,229 $ 5,137
Net income (loss) (94) 253 (267) 205
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 21 14 64 63
Reclassification to earnings from cash flow hedges (28) (27) (26) (20)
Total other comprehensive income (loss) (7) (13) 38 43
Return on power program appropriation investment (1) (2) (3) (4)
Return of power program appropriation investment (5) (5) (10) (10)
Balance at End of Period 4,987 5,371 4,987 5,371
Power Program Appropriation Investment
        
Balance at Beginning of Period 303 323 308 328
Net income (loss) 0 0 0 0
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 0 0 0 0
Reclassification to earnings from cash flow hedges 0 0 0 0
Total other comprehensive income (loss) 0 0 0 0
Return on power program appropriation investment 0 0 0 0
Return of power program appropriation investment (5) (5) (10) (10)
Balance at End of Period 298 318 298 318
Power Program Retained Earnings
        
Balance at Beginning of Period 4,257 4,217 4,429 4,264
Net income (loss) (92) 255 (262) 210
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 0 0 0 0
Reclassification to earnings from cash flow hedges 0 0 0 0
Total other comprehensive income (loss) 0 0 0 0
Return on power program appropriation investment (1) (2) (3) (4)
Return of power program appropriation investment 0 0 0 0
Balance at End of Period 4,164 4,470 4,164 4,470
Nonpower Programs Appropriation Investment, Net
        
Balance at Beginning of Period 627 637 630 640
Net income (loss) (2) (2) (5) (5)
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 0 0 0 0
Reclassification to earnings from cash flow hedges 0 0 0 0
Total other comprehensive income (loss) 0 0 0 0
Return on power program appropriation investment 0 0 0 0
Return of power program appropriation investment 0 0 0 0
Balance at End of Period 625 635 625 635
Accumulated Other Comprehensive Income (Loss)
        
Balance at Beginning of Period (93) (39) (138) (95)
Net income (loss) 0 0 0 0
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 21 14 64 63
Reclassification to earnings from cash flow hedges (28) (27) (26) (20)
Total other comprehensive income (loss) (7) (13) 38 43
Return on power program appropriation investment 0 0 0 0
Return of power program appropriation investment 0 0 0 0
Balance at End of Period (100) (52) (100) (52)
Comprehensive Income (Loss)
        
Net income (loss) (94) 253 (267) 205
Other comprehensive income (loss)        
Net unrealized gain (loss) on future cash flow hedges 21 14 64 63
Reclassification to earnings from cash flow hedges (28) (27) (26) (20)
Total other comprehensive income (loss) (7) (13) 38 43
Total comprehensive income (loss) $ (101) $ 240 $ (229) $ 248