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Financial and capital management (Tables)
12 Months Ended
Dec. 31, 2024
Financial Instruments [Abstract]  
Fair value details of financial instruments measured at amortized cost
The following table provides the fair value details of other financial instruments measured at amortized cost in the statements of financial position.
  December 31, 2024 December 31, 2023
Classification Fair value methodology Note Carrying value Fair value Carrying value Fair value
Debt securities and other debt Debt due within one year and long-term debt Quoted market price of debt 24, 25 31,247  30,885  29,049  28,225 
Disclosure of fair value measurement of assets
The following table provides the fair value details of financial instruments measured at fair value in the statements of financial position.
    Fair value
  Classification Note Carrying value of asset (liability) Quoted prices in active markets for identical assets (level 1)
Observable market data (level 2)(1)
Non-observable market inputs (level 3)(2)
December 31, 2024        
Publicly-traded and privately-held investments(3)
Other non-current assets 21 877  35    842 
Derivative financial instruments Other current assets, trade payables and other liabilities, other non-current assets and liabilities (368)   (368)  
Other Other non-current assets 225    225   
December 31, 2023        
Publicly-traded and privately-held investments(3)
Other non-current assets 21 587  10  —  577 
Derivative financial instruments Other current assets, trade payables and other liabilities, other non-current assets and liabilities (488) —  (488) — 
Other Other non-current assets and liabilities 147  —  216  (69)
(1)Observable market data such as equity prices, interest rates, swap rate curves and foreign currency exchange rates.
(2)Non-observable market inputs such as discounted cash flows and revenue and earnings multiples. For certain privately-held investments, changes in our valuation assumptions may result in a significant change in the fair value of our level 3 financial instruments.
(3)Unrealized gains and losses are recorded in Other comprehensive income (loss) in the statements of comprehensive income and are reclassified from Accumulated other comprehensive loss to the Deficit in the statements of financial position when realized.
Disclosure of fair value measurement of liabilities
The following table provides the fair value details of financial instruments measured at fair value in the statements of financial position.
    Fair value
  Classification Note Carrying value of asset (liability) Quoted prices in active markets for identical assets (level 1)
Observable market data (level 2)(1)
Non-observable market inputs (level 3)(2)
December 31, 2024        
Publicly-traded and privately-held investments(3)
Other non-current assets 21 877  35    842 
Derivative financial instruments Other current assets, trade payables and other liabilities, other non-current assets and liabilities (368)   (368)  
Other Other non-current assets 225    225   
December 31, 2023        
Publicly-traded and privately-held investments(3)
Other non-current assets 21 587  10  —  577 
Derivative financial instruments Other current assets, trade payables and other liabilities, other non-current assets and liabilities (488) —  (488) — 
Other Other non-current assets and liabilities 147  —  216  (69)
(1)Observable market data such as equity prices, interest rates, swap rate curves and foreign currency exchange rates.
(2)Non-observable market inputs such as discounted cash flows and revenue and earnings multiples. For certain privately-held investments, changes in our valuation assumptions may result in a significant change in the fair value of our level 3 financial instruments.
(3)Unrealized gains and losses are recorded in Other comprehensive income (loss) in the statements of comprehensive income and are reclassified from Accumulated other comprehensive loss to the Deficit in the statements of financial position when realized.
Change in allowance for doubtful accounts
The following table provides the change in allowance for doubtful accounts for trade receivables.
  Note 2024 2023
Balance, January 1 (118) (129)
Additions (169) (126)
Usage and reversals 167  137 
Balance, December 31 12  (120) (118)
The following table provides the change in allowance for doubtful accounts for contract assets.
  Note 2024 2023
Balance, January 1 (18) (19)
Additions (20) (40)
Usage and reversals 20  41 
Balance, December 31 (18) (18)
Current (6) (6)
Non-current (12) (12)
Balance, December 31 14 (18) (18)
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments
The following table provides further details on trade receivables, net of allowance for doubtful accounts.
At December 31 2024 2023
Trade receivables not past due 3,346  3,158 
Trade receivables past due
Under 60 days 484  421 
60 to 120 days 240  209 
Over 120 days 115  53 
Trade receivables, net of allowance for doubtful accounts 4,185  3,841 
Maturity analysis for recognized financial liabilities
The following table is a maturity analysis for recognized financial liabilities at December 31, 2024 for each of the next five years and thereafter.
At December 31, 2024 Note 2025 2026 2027 2028 2029 Thereafter Total
Total debt, excluding lease liabilities 25 2,769  1,988  1,771  2,139  1,490  22,114  32,271 
Lease liabilities (1)
25 1,258  991  493  392  332  2,047  5,513 
Notes payable 24 2,203  —  —  —  —  —  2,203 
Loan secured by receivables 24 1,600  —  —  —  —  —  1,600 
Interest payable on long-term debt, notes payable
    and loan secured by receivables
1,491  1,255  1,213  1,155  1,055  12,037  18,206 
Net receipts on cross currency interest
    rate swaps and interest rate swaps
(64) (61) (40) (40) (39) (1,322) (1,566)
Total 9,257  4,173  3,437  3,646  2,838  34,876  58,227 
(1) Includes imputed interest of $922 million.
Details on outstanding foreign currency forward contracts and cross currency basis swaps
The following table provides further details on our outstanding foreign currency forward contracts and options as at December 31, 2024.
Type of hedge Buy currency Amount to receive Sell currency Amount to pay Maturity Hedged item
Cash flow(1)
USD 1,117  CAD 1,606  2025 Loans
Cash flow USD 1,533  CAD 2,154  2025 Commercial paper
Cash flow USD 671  CAD 873  2025 Anticipated purchases
Cash flow PHP 3,193  CAD 75  2025 Anticipated purchases
Cash flow USD 509  CAD 677  2026 Anticipated purchases
Economic USD 280  CAD 375  2025 Anticipated purchases
Economic - swaps CAD 423  USD 302  2025 Anticipated purchases
Economic - options(2)
USD 270  CAD 353  2025 Anticipated purchases
Economic - call options USD 500  CAD 675  2025 Anticipated purchases
Economic - put options USD 780  CAD 1,044  2025 Anticipated purchases
Economic - swaps USD 102  CAD 140  2026 Anticipated purchases
Economic - call options USD 120  CAD 158  2026 Anticipated purchases
Economic - call options CAD 348  USD 240  2026 Anticipated purchases
Economic - put options USD 150  CAD 197  2026 Anticipated purchases
Economic - swaps USD 200  CAD 275  2027 Anticipated purchases
(1)    Forward contracts to hedge loans secured by receivables under our securitization program. See Note 24, Debt due within one year, for additional information.
(2) Foreign currency options with a leverage provision and a profit cap limitation.
Summary of key ratios
The following table provides a summary of our key ratio.
At December 31 2024 2023
Net debt leverage ratio 3.81  3.48