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Fixed Assets (Detail)
¥ in Millions, $ in Millions
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
CNY (¥)
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross ¥ 38,388 $ 5,514 ¥ 34,597
Accumulated depreciation and impairment (20,077) (2,884) (16,694)
Fixed assets, net 18,311 2,630 17,903
Computer equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 29,592 4,251 26,186
Office building      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 4,628 665 4,168
Office building related facility, machinery and equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 2,317 333 2,168
Vehicles      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 203 29 190
Office equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 944 135 813
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 391 56 352
Construction in Progress      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross ¥ 313 $ 45 ¥ 720