Segment Reporting - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) Segment	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | Segment	4
Total assets	$ 56,622	$ 61,375
Business Processing [Member]
Segment Reporting Information [Line Items]
Total assets	357	380
Other Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 1,700	$ 1,400