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Business Segments - Summary of Operating Results by Reportable Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Revenue:        
Total revenue $ 594 $ 539 $ 1,178 $ 1,012
Operating profit (loss):        
Total operating profit (loss) 36 29 71 52
United States [Member]        
Revenue:        
Total revenue 456 408 883 742
Operating profit (loss):        
Total operating profit (loss) 29 32 52 46
Canada [Member]        
Revenue:        
Total revenue 66 72 149 154
Operating profit (loss):        
Total operating profit (loss) 3 6 11 13
International [Member]        
Revenue:        
Total revenue 72 59 146 116
Operating profit (loss):        
Total operating profit (loss) $ 4 $ (9) $ 8 $ (7)