Goodwill and Intangible Assets - Additional Information (Detail) ¥ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2021
CNY (¥)
Unit
|
Dec. 31, 2021
USD ($)
Unit
|
Dec. 31, 2020
CNY (¥)
Unit
|
Dec. 31, 2019
CNY (¥)
|
|
| Amortization Of Intangible Assets Disclosure [Abstract] | ||||
| Number of reporting units the company | 3 | 3 | 2 | |
| Impairment loss on intangible assets | ¥ 6 | $ 1 | ¥ 350 | ¥ 406 |
| Amortization expense of intangible assets | ¥ 471 | $ 74 | ¥ 544 | ¥ 661 |