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Supplemental Cash Flow Information - Disclosure of Changes in Working Capital and Other (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Net Change in Working Capital and Other [Line Items]    
Accounts receivable $ 0 $ (61)
Unbilled revenue (28) (6)
Inventories 36 (21)
Work-in-progress related to finance leases (35) 31
EI assets - finance leases receivable 52 13
Income taxes receivable 0 5
Prepayments 9 (5)
Net assets held for sale 2 (2)
Long-term receivables 0 21
Accounts payable and accrued liabilities and provisions (7) (21)
Income taxes payable 23 1
Deferred revenue 74 24
Other current liabilities (6) 6
Foreign currency and other (14) 28
Net change in working capital and other 106 13
Interest paid - short- and long-term borrowings 87 106
Interest paid - lease liabilities 4 5
Total interest paid 91 111
Interest received 4 27
Taxes paid 45 41
Taxes received $ 0 $ 1