v3.22.4
Interest expense and foreign exchange
12 Months Ended
Dec. 31, 2022
Interest expense and foreign exchange  
Interest expense and foreign exchange Interest expense and foreign exchange
Years Ended December 31 (millions)202220212020
Interest expense
Interest on long-term debt, excluding lease liabilities$25 $27 $28 
Interest on lease liabilities14 14 14 
Amortization of financing fees and other2 
$41 $44 $46 
Foreign exchange
Derivatives used to manage currency risks$ $— $(1)
Foreign exchange gain(7)(1)(1)
$(7)$(1)$(2)