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Other Income, Net
12 Months Ended
Dec. 31, 2023
Other Income and Expenses [Abstract]  
Other Income, Net OTHER INCOME, NET
($ millions)2023 2022 
Equity component of AFUDC101 78 
Interest income (1)
76 11 
Non-service component of net periodic benefit cost62 92 
Gain on disposal of Aitken Creek, pre-tax (Note 21)23 — 
Gain (loss) on derivatives, net9 (17)
Gain (loss) on retirement investments, net7 (18)
Other13 19 
291 165 
(1)    Includes interest on short-term deposits, as well as interest on regulatory deferrals