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Interest Expense
12 Months Ended
Dec. 31, 2022
Interest Expense [Abstract]  
Interest Expense Interest Expense
Details of interest expense are as follows:
 Year ended December 31,
 202220212020
 (in millions)
Interest on borrowings(1)
$155 $175 $185 
Fees on financing agreements(1)
Interest on tax liabilities(2)
184 (14)
Interest capitalized(3)(1)— 
Interest expense$344 $184 $179 
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(1)See Note 12—Financing Agreements for additional information.
(2)Interest on tax liabilities for the year ended December 31, 2022 includes interest accrued on reserves for unrecognized tax benefits related to Canadian transfer pricing. Interest on tax liabilities for the year ended December 31, 2020 includes a reduction in interest accrued on reserves for unrecognized tax benefits.