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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Net income (loss) $ 470 $ 233 $ 1,220 $ 546
Other comprehensive income (loss)        
Net unrealized gain (loss) on cash flow hedges (65) 14 17 31
Reclassification to earnings from cash flow hedges [1] 43 (29) 13 (3)
Total other comprehensive income (loss) (22) (15) 30 28
Total comprehensive income (loss) $ 448 $ 218 $ 1,250 $ 574
[1] There were no ineffective portions or amounts excluded from effectiveness testing for any of the periods presented. Based on forecasted foreign currency exchange rates, TVA expects to reclassify approximately $42 million of gains from AOCI to interest expense within the next 12 months to offset amounts anticipated to be recorded in interest expense related to net exchange gain on the debt.