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Long-term Investments - Additional Information (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2019
USD ($)
Jul. 31, 2018
CNY (¥)
Summary Of Investment Holdings [Line Items]          
Equity investments without readily determinable fair value ¥ 1,812,810   ¥ 1,761,487 $ 260,394  
Accumulated impairment of equity investments without readily determinable fair value 181,274   31,500 26,038  
Impairment charges recognized on equity investments without readily determinable fair values 169,374 $ 24,329 0    
Equity method investments ¥ 663,376   ¥ 810,553 95,288  
Held-to-maturity debt securities maturity period 2 years 2 years      
Long-term debt securities, held-to-maturity ¥ 494,373 $ 71,012      
Carrying value of long-term held-to-maturity debt securities 495,710     71,204  
Unrecognized holding loss 4,911     705  
Fair value of long-term debt securities, held-to-maturity 490,799     70,499  
Gross unrecognized holding gain ¥ 0     $ 0  
Beijing Xin'ai Sports Media Technology co., LTD          
Summary Of Investment Holdings [Line Items]          
Equity method investment, ownership percentage 26.00%     26.00% 32.00%
Equity method investments         ¥ 796,000
Basis differences and investment goodwill         ¥ 609,502