Related Parties - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Lease cost	$ 328	$ 319	$ 304
Lease right-of-use assets	922	922
Lease liabilities	958	954
Operating expenses reimbursed	$ 10,865	10,674	8,778
Financial Advisor [Member]
Related Party Transaction [Line Items]
Percentage of branch office space leased from its financial advisors	11.00%
Lease cost	$ 41	37	35
Lease right-of-use assets	105	95
Lease liabilities	106	96
BB Trust [Member] \| Olive Street [Member]
Related Party Transaction [Line Items]
Investment advisory fee revenue	239	233	174
Edward Jones Money Market Fund [Member]
Related Party Transaction [Line Items]
Revenue contracts with customers	103		46
Total fees voluntarily waived to limit fund expenses	89	190	133
Edward Jones Money Market Fund [Member] \| Olive Street [Member]
Related Party Transaction [Line Items]
Investment advisory fee revenue	8
Operating expenses reimbursed	2
Reimbursement of waived fees	5
Edward Jones Money Market Fund [Member] \| Passport Research, Ltd [Member]
Related Party Transaction [Line Items]
Investment advisory fee revenue	48	15	56
Total fees waived	$ 8	$ 51	$ 7

Amount of fees voluntarily waived to limit fund expenses.

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Operating lease space owned by financial advisors

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