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Supplementary Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure Of Supplementary Cash Flow Information [Abstract]  
Disclosure Of Changes In Non-Cash Working Capital Items
A) Working Capital
Working capital is calculated as follows:
As at December 31,2021
2020
Total Current Assets11,9882,976
Total Current Liabilities7,3052,359
Working Capital 4,683617
At December 31, 2021, adjusted working capital was $3.8 billion (December 31, 2020 – $653 million), excluding assets held for sale of $1.3 billion (December 31, 2020 – $nil), the current portion of the contingent payment of $236 million (December 31, 2020 – $36 million) and liabilities related to assets held for sale of $186 million (December 31, 2020 – $nil).
Changes in non-cash working capital is as follows:
For the years ended December 31,202120202019
Accounts Receivable and Accrued Revenues(953)77(475)
Income Tax Receivable(1)(12)150
Inventories(1,646)450(408)
Accounts Payable and Accrued Liabilities1,645(338)283
Income Tax Payable87(17)—
Total Non-Cash Working Capital(868)160(450)
Cash From (Used in) Operating(1,227)198(333)
Cash From (Used in) Investing359(38)(117)
Total Non-Cash Working Capital(868)160(450)

For the years ended December 31,202120202019
Interest Paid811381457
Interest Received24512
Income Taxes Paid
2091817
Summary of Reconciliation of Liabilities to Cash Flows from Financing Activities
Dividends PayableShort-Term BorrowingsLong-Term DebtLease Liabilities
As at December 31, 2018——9,164—
Adjustment for Change in Accounting Policy (1)
———1,494
Changes From Financing Cash Flows:
(Repayment) of Long-Term Debt——(2,279)—
Net Issuance (Repayment) of Revolving Long-Term
   Debt		——276—
Common Share Dividends Paid(260)———
Principal Repayment of Leases———(150)
Non-Cash Changes:
Common Share Dividends Declared260———
Foreign Exchange (Gain) Loss——(399)(23)
Net Premium (Discount) on Redemption of
   Long-Term Debt		——(63)—
Lease Additions———590
Lease Terminations———(11)
Lease Re-measurements———15
Other———1
As at December 31, 2019——6,6991,916
Changes From Financing Cash Flows:
Common Share Dividends Paid(77)———
Net Issuance (Repayment) of Short-Term Borrowings—117——
Issuance of Long-Term Debt——1,326—
(Repayment) of Long-Term Debt——(112)—
(Repayment) of Revolving Long-Term Debt——(220)—
Principal Repayment of Leases———(197)
Non-Cash Changes:
Common Share Dividends Declared77———
Foreign Exchange (Gain) Loss, Net—4(231)(6)
Net Premium (Discount) on Redemption of
   Long-Term Debt		——(25)—
Finance Costs——5—
Lease Additions———49
Lease Terminations———(1)
Lease Modifications———(2)
Lease Re-measurements———(2)
Other——(1)—
As at December 31, 2020—1217,4411,757
(1) Effective January 1, 2019, the Company adopted International Financial Reporting Standard 16, "Leases".
(Continued)Dividends PayableShort-Term BorrowingsLong-Term DebtLease Liabilities
Acquisition (see Note 5A)—406,6021,441
Changes From Financing Cash Flows:
Common Share Dividends Paid(176)———
Preferred Share Dividends Paid(34)———
Net Issuance (Repayment) of Short-Term Borrowings—(77)——
Net Issuance (Repayment) of Revolving Long-Term
   Debt		——(350)—
Issuance of Long-Term Debt——1,557—
(Repayment) of Long-Term Debt——(2,870)—
Principal Repayment of Leases———(300)
Non-Cash Changes:
Common Share Dividends Declared176———
Preferred Share Dividends Declared34———
Foreign Exchange (Gain) Loss, Net—(5)(57)(10)
Net Premium (Discount) on Redemption of
   Long-Term Debt		——121—
Finance Costs——(59)—
Lease Additions———110
Lease Terminations———(1)
Lease Modifications———22
Lease Re-Measurements———(4)
Transfers to Liabilities Related to Assets Held for Sale———(58)
As at December 31, 2021—7912,3852,957