IFRS 7 Disclosure (Structural Interest Rate Sensitivity Measures) (Details) - CAD ($) $ in Millions	Apr. 30, 2026	Jan. 31, 2026	Apr. 30, 2025
100 bps increase [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	$ (3,683)	$ (2,521)	$ (2,612)
NII Sensitivity	411	745	679
100 bps decrease [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	3,407	2,179	2,116
NII Sensitivity	(461)	$ (815)	$ (769)
Canada [member] \| 100 bps increase [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	(1,191)
NII Sensitivity	354
Canada [member] \| 100 bps decrease [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	1,144
NII Sensitivity	(390)
United States [member] \| 100 bps increase [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	(2,492)
NII Sensitivity	57
United States [member] \| 100 bps decrease [member]
Structural Interest Rate Sensitivity Measures [Line Items]
EVE Sensitivity	2,263
NII Sensitivity	$ (71)