XML 136 R84.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements Fair Value Measurements - Fair Value Measurements (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Investments    
Equity securities $ 151 $ 173
Debt securities    
U.S. government corporations and agencies 105 162
Corporate debt securities 255 197
Residential mortgage-backed securities 25 20
Commercial mortgage-backed securities 7 6
Collateralized debt obligations 10 12
Private partnerships 159 53
Commingled funds    
Equity security commingled funds 741 [1] 657 [1]
Debt security commingled funds 248 [1] 182 [1]
Total investments 1,701 1,462
Currency swaps 61 21
Commodity contact derivatives 3 119
Commodity derivatives under FTP    
Swap contracts 4 8
Total commodity derivatives under FTP 4 8
Total 1,769 1,610
Liabilities [Abstract]    
Currency swaps 15 54
Interest rate swaps 1,199 1,723
Commodity contract derivatives 144 386
Commodity derivatives under FTP    
Swap contracts 170 236
Total commodity derivatives under FTP 170 236
Total 1,528 2,399
Fair Value, Inputs, Level 1
   
Investments    
Equity securities 151 173
Debt securities    
U.S. government corporations and agencies 38 59
Corporate debt securities 0 0
Residential mortgage-backed securities 0 0
Commercial mortgage-backed securities 0 0
Collateralized debt obligations 0 0
Private partnerships 0 0
Commingled funds    
Equity security commingled funds 0 [1] 0 [1]
Debt security commingled funds 0 [1] 0 [1]
Total investments 189 232
Currency swaps 0 0
Commodity contact derivatives 0 0
Commodity derivatives under FTP    
Swap contracts 0 0
Total commodity derivatives under FTP 0 0
Total 189 232
Liabilities [Abstract]    
Currency swaps 0 0
Interest rate swaps 0 0
Commodity contract derivatives 0 0
Commodity derivatives under FTP    
Swap contracts 0 0
Total commodity derivatives under FTP 0 0
Total 0 0
Fair Value, Inputs, Level 2
   
Investments    
Equity securities 0 0
Debt securities    
U.S. government corporations and agencies 67 103
Corporate debt securities 255 197
Residential mortgage-backed securities 25 20
Commercial mortgage-backed securities 7 6
Collateralized debt obligations 10 12
Private partnerships 0 0
Commingled funds    
Equity security commingled funds 741 [1] 657 [1]
Debt security commingled funds 248 [1] 182 [1]
Total investments 1,353 1,177
Currency swaps 61 21
Commodity contact derivatives 0 0
Commodity derivatives under FTP    
Swap contracts 101 123
Total commodity derivatives under FTP 101 123
Total 1,515 1,321
Liabilities [Abstract]    
Currency swaps 15 54
Interest rate swaps 1,199 1,723
Commodity contract derivatives 1 0
Commodity derivatives under FTP    
Swap contracts 267 351
Total commodity derivatives under FTP 267 351
Total 1,482 2,128
Fair Value, Inputs, Level 3
   
Investments    
Equity securities 0 0
Debt securities    
U.S. government corporations and agencies 0 0
Corporate debt securities 0 0
Residential mortgage-backed securities 0 0
Commercial mortgage-backed securities 0 0
Collateralized debt obligations 0 0
Private partnerships 159 53
Commingled funds    
Equity security commingled funds 0 [1] 0 [1]
Debt security commingled funds 0 [1] 0 [1]
Total investments 159 53
Currency swaps 0 0
Commodity contact derivatives 3 119
Commodity derivatives under FTP    
Swap contracts 0 0
Total commodity derivatives under FTP 0 0
Total 162 172
Liabilities [Abstract]    
Currency swaps 0 0
Interest rate swaps 0 0
Commodity contract derivatives 143 386
Commodity derivatives under FTP    
Swap contracts 0 0
Total commodity derivatives under FTP 0 0
Total 143 386
Netting
   
Investments    
Equity securities 0 [2] 0 [2]
Debt securities    
U.S. government corporations and agencies 0 [2] 0 [2]
Corporate debt securities 0 [2] 0 [2]
Residential mortgage-backed securities 0 [2] 0 [2]
Commercial mortgage-backed securities 0 [2] 0 [2]
Collateralized debt obligations 0 [2] 0 [2]
Private partnerships 0 [2] 0 [2]
Commingled funds    
Equity security commingled funds 0 [1],[2] 0 [1],[2]
Debt security commingled funds 0 [1],[2] 0 [1],[2]
Total investments 0 [2] 0 [2]
Currency swaps 0 [2] 0 [2]
Commodity contact derivatives 0 [2] 0 [2]
Commodity derivatives under FTP    
Swap contracts (97) [2] (115) [2]
Total commodity derivatives under FTP (97) (115) [2]
Total (97) [2] (115) [2]
Liabilities [Abstract]    
Currency swaps 0 [2] 0 [2]
Interest rate swaps 0 [2] 0 [2]
Commodity contract derivatives 0 [2] 0 [2]
Commodity derivatives under FTP    
Swap contracts (97) [2] (115) [2]
Total commodity derivatives under FTP (97) [2] (115) [2]
Total $ (97) [2] $ (115) [2]
[1] Commingled funds represent investment funds comprising multiple individual financial instruments and are classified in the table based on their existing investment portfolio as of the measurement date. Commingled funds primarily composed of one class of security are classified in that category.
[2] Due to the right of setoff and method of settlement, TVA elects to record commodity derivatives under the FTP based on its net commodity position with the counterparty or broker.