XML 177 R70.htm IDEA: XBRL DOCUMENT v3.21.2
Other Long-Term Liabilities Other Long-Term Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Sep. 30, 2020
Other Long-Term Liabilities    
Interest rate swaps $ 1,639 $ 2,041
Derivative Liability (402)  
Currency swap liabilities 83 209 [1]
EnergyRight financing obligation (92) (108)
Deferred Revenue, Noncurrent 42 38
Non-current regulatory liabilities 40 23
Total other long-term liabilities 2,041 $ 2,548
Deferral of EnergyRight laons 1  
Finance Lease, Liability $ 747  
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities
Deferred Compensation Liability, Current $ (51) $ (47)
Current portion of energy prepayment obligations 10 11
Other long-term liabilities    
Other Long-Term Liabilities    
Interest rate swaps 1,524 1,927
Currency swap liabilities 76 123
EnergyRight financing obligation (66) (78)
Environmental agreements liability 42 38
Membership interests of VIE subject to mandatory redemption 29 56
Other 140 117
Accounts payable and accrued liabilities    
Other Long-Term Liabilities    
Interest rate swaps 115 114
Service agreements (28) (15)
EnergyRight financing obligation (16) (19)
Other Current Liabilities    
Other Long-Term Liabilities    
Currency swap liabilities $ 7 $ 86
[1] See Note 16 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.