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Prepaid expenses and other current assets
 6 Months Ended
Jun. 30, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid expenses and other current assets Prepaid expenses and other current assets
(in millions)June 30, 2024December 31, 2023
Prepaid expenses$81 $62 
Other current assets35 30 
Deferred equity raise costs21 9 
Prepaid expenses and other current assets$137 $101