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Debt and Letters of Credit (Tables)
 6 Months Ended
Jun. 30, 2023
Debt Disclosure [Abstract]  
Schedule of Debt Debt consisted of the following:
(in millions)June 30, 2023December 31, 2022
Borrowings under credit facility$— $— 
Current:
2023 Notes$— $138 
Other borrowings17 14 
Total current$17 $152 
Long-term:
Senior Notes
2024 Notes381 381 
Unamortized discount on 2024 Notes(1)(1)
Unamortized deferred financing costs— — 
2028 Notes600 600 
Unamortized discount on 2028 Notes(1)(1)
Unamortized deferred financing costs(2)(3)
Other long-term borrowings2 2 
Total long-term$979 $978