Leases (Direct Finance and Sales-type Leases) (Details) - CAD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Net investment in direct finance and sales-type leases
Total minimum lease payments to be received	$ 1,393	$ 947
Less: amounts representing estimated executory costs	(205)	(165)
Minimum lease payments receivable	1,188	782
Estimated residual value of leased property (unguaranteed)	183	183
Less: unearned finance lease income	(733)	(443)
Net investment in direct finance and sales-type leases	638	522
Principal due within one year (included in "Receivables and other current assets")	34	19
Net Investment in direct finance leases - long-term	604	503
Future minimum lease payments to be received for each of the next five years and in aggregate thereafter
2023	90
2024	92
2025	95
2026	94
2027	92
Thereafter	930
Total minimum lease payments to be received	1,393	947
Less: executory costs	(205)	(165)
Minimum lease payments receivable	$ 1,188	$ 782

Amount of deferred selling profit from direct financing lease.

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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases.

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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases, classified as current.

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Amount, before allowance for credit loss, of net investment in sales-type and direct financing leases, classified as noncurrent.

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Amount of residual asset covered by residual value guarantee. Excludes guarantee considered to be lease payments for lessor.

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Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases.

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.

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