v3.22.0.1

Interest Cost Components | 12 Months Ended
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Dec. 31, 2021
Interest Cost Components [Abstract] |
Interest Cost Disclosure | Interest Cost Components
For the year ended December 31, |  | 2021 |  | 2020 |  | 2019
Amount charged to expense |  | $ | 100 |  |  | $ | 118 |  |  | $ | 115 |
Amount capitalized |  | 4 |  |  | 6 |  |  | 12 |
|  | $ | 104 |  |  | $ | 124 |  |  | $ | 127 |
In 2020 (January through March) and 2019, total interest costs include an allocation of ParentCo’s financing costs of $28 and $115, respectively (see Cost Allocations in Note A). Also, in 2020, total interest costs include $19 for the write-off and immediate expensing of certain debt issuance costs related to a debt refinancing (see Note Q). Typically, such costs are deferred and amortized to interest expense over the term of the related financing arrangement.

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