Related Parties - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Lease cost	$ 348	$ 337	$ 328
Lease right-of-use assets	1,085	1,029
Lease liabilities	1,125	1,066
Operating expenses reimbursed	$ 14,023	12,186	10,865
Financial Advisor [Member]
Related Party Transaction [Line Items]
Percentage of branch office space leased from its financial advisors	12.00%
Lease cost	$ 48	45	41
Lease right-of-use assets	124	114
Lease liabilities	125	116
BB Trust [Member] | Olive Street [Member]
Related Party Transaction [Line Items]
Investment advisory fee revenue	305	260	239
Edward Jones Money Market Fund [Member]
Related Party Transaction [Line Items]
Revenue contracts with customers	145	136	103
Total fees voluntarily waived to limit fund expenses	43	42	89
Edward Jones Money Market Fund [Member] | Olive Street [Member]
Related Party Transaction [Line Items]
Total fees waived	0	0	8
Investment advisory fee revenue	$ 60	$ 57	$ 56