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Components of Income Tax (Detail)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Income Tax Disclosure [Abstract]        
Current income tax ¥ 3,163 $ 459 ¥ 3,636 ¥ 4,668
Income tax refund due to reduced tax rate (468) (68) 0 (719)
Adjustments of deferred tax assets due to change in tax rates 119 17 109 (0)
Deferred income tax expense (benefit) (236) (34) (558) 120
Taxation for the year ¥ 2,578 $ 374 ¥ 3,187 ¥ 4,064