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Interest Expense | 12 Months Ended
--- | ---
Dec. 31, 2021
Interest Expense [Abstract] |
Interest Expense | Interest Expense Details of interest expense are as follows:
| Year ended December 31,
| 2021 |  | 2020 |  | 2019
| (in millions)
Interest on borrowings(1) | $ | 175 |  |  | $ | 185 |  |  | $ | 223 |
Fees on financing agreements(1) | 9 |  |  | 8 |  |  | 13 |
Interest on tax liabilities(2) | 1 |  |  | (14) |  |  | 3 |
Interest capitalized | (1) |  |  | — |  |  | (2) |
Interest expense | $ | 184 |  |  | $ | 179 |  |  | $ | 237 |
_______________________________________________________________________________ (1)See Note 13—Financing Agreements for additional information. (2)Interest on tax liabilities for the year ended December 31, 2020 includes a reduction in interest accrued on the reserve for unrecognized tax benefits.

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