Business Segments - Total Net Revenues and Pre-Tax Earnings By Geographic Region (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total net revenues	$ 11,975	$ 13,608	$ 36,772	$ 46,700
Percentage of total net revenues	100.00%	100.00%	100.00%	100.00%
Total pre-tax earnings	$ 3,756	$ 6,842	$ 11,956	$ 22,019
Percentage of total pre-tax earnings	100.00%	100.00%	100.00%	100.00%
Americas
Segment Reporting Information [Line Items]
Total net revenues	$ 7,542	$ 8,169	$ 21,975	$ 28,951
Percentage of total net revenues	63.00%	60.00%	60.00%	62.00%
Total pre-tax earnings	$ 2,280	$ 4,004	$ 6,424	$ 13,484
Percentage of total pre-tax earnings	61.00%	59.00%	54.00%	61.00%
EMEA
Segment Reporting Information [Line Items]
Total net revenues	$ 3,094	$ 3,394	$ 10,344	$ 11,585
Percentage of total net revenues	26.00%	25.00%	28.00%	25.00%
Total pre-tax earnings	$ 1,235	$ 1,922	$ 4,399	$ 6,012
Percentage of total pre-tax earnings	33.00%	28.00%	37.00%	27.00%
Asia
Segment Reporting Information [Line Items]
Total net revenues	$ 1,339	$ 2,045	$ 4,453	$ 6,164
Percentage of total net revenues	11.00%	15.00%	12.00%	13.00%
Total pre-tax earnings	$ 241	$ 916	$ 1,133	$ 2,523
Percentage of total pre-tax earnings	6.00%	13.00%	9.00%	12.00%