Acquisitions - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Feb. 01, 2021 |
Mar. 31, 2021 |
|
| Business Acquisition [Line Items] | ||
| Payments to acquire business | $ 1,062 | |
| Aperio [Member] | ||
| Business Acquisition [Line Items] | ||
| Business acquisition, percentage of equity interest acquired | 100.00% | |
| Payments to acquire business | $ 1,051 |