v3.22.4
Interest Cost Components
 12 Months Ended
Dec. 31, 2022
Interest Cost Components [Abstract]  
Interest Cost Disclosure Interest Cost Components
For the year ended December 31,202220212020
Amount charged to expense$104 $100 $118 
Amount capitalized7 4 6 
$111 $104 $124 
In 2020 (January through March), total interest costs include an allocation of ParentCo’s financing costs of $28 (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.