Significant estimates and assumptions	3 Months Ended
Jan. 31, 2023
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Significant estimates and assumptions	Note 2. Significant estimates and assumptions As disclosed in our 2022 Annual Report, the preparation of the consolidated financial statements in accordance with IFRS requires management to make estimates and assumptions that affect the recognized and measured amounts of assets, liabilities, net income, comprehensive income and related disclosures. Significant estimates and assumptions are made in the areas of the valuation of financial instruments, allowance for credit losses, the evaluation of whether to consolidate structured entities, asset impairment, income taxes, provisions and contingent liabilities, post-employment and other long-term benefit plan assumptions and valuation of self-managed loyalty points programs. We continue to operate in an uncertain macroeconomic environment which gives rise to heightened uncertainty as it relates to accounting estimates and assumptions and increases the need to apply judgment in evaluating the economic and market environment and its impact on significant estimates. The need to apply judgment particularly impacts estimates and assumptions relating to the allowance for credit losses, where significant judgment continued to be inherent in the forecasting of forward-looking information. Changes in the judgments and estimates related to IFRS 9 can have a significant impact on the level of expected credit loss (ECL) allowance recognized and the period-over-period volatility of the provision for credit losses. Actual results could differ from these estimates and assumptions. See Note 5 to our consolidated financial statements in our 2022 Annual Report, and Note 6 to our interim consolidated financial statements for more information concerning the high level of judgment inherent in the estimation of ECL allowance.

As disclosed in our 2022 Annual Report, the preparation of the consolidated financial statements in accordance with IFRS requires management to make estimates and assumptions that affect the recognized and measured amounts of assets, liabilities, net income, comprehensive income and related disclosures. Significant estimates and assumptions are made in the areas of the valuation of financial instruments, allowance for credit losses, the evaluation of whether to consolidate structured entities, asset impairment, income taxes, provisions and contingent liabilities, post-employment and other long-term benefit plan assumptions and valuation of self-managed loyalty points programs. We continue to operate in an uncertain macroeconomic environment which gives rise to heightened uncertainty as it relates to accounting estimates and assumptions and increases the need to apply judgment in evaluating the economic and market environment and its impact on significant estimates.

The need to apply judgment particularly impacts estimates and assumptions relating to the allowance for credit losses, where significant judgment continued to be inherent in the forecasting of forward-looking information. Changes in the judgments and estimates related to IFRS 9 can have a significant impact on the level of expected credit loss (ECL) allowance recognized and the period-over-period volatility of the provision for credit losses. Actual results could differ from these estimates and assumptions. See Note 5 to our consolidated financial statements in our 2022 Annual Report, and Note 6 to our interim consolidated financial statements for more information concerning the high level of judgment inherent in the estimation of ECL allowance.