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Finite-Lived Intangible Assets (Detail) ¥ in Millions, $ in Millions | Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 CNY (¥)
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Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | ¥ 23,908 |  | ¥ 23,744
Finite lived intangible assets accumulated impairment | (419) |  | (148)
Finite-lived intangible assets, accumulated amortization | (15,602) |  | (14,415)
Finite-lived intangible assets, net carrying value | 7,887 | $ 1,133 | 9,181
Land use right |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value |  |  | 464
Finite lived intangible assets accumulated impairment |  |  | (130)
Finite-lived intangible assets, accumulated amortization |  |  | (69)
Finite-lived intangible assets, net carrying value |  |  | 265
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 31 |  | 589
Finite-lived intangible assets, accumulated amortization | (31) |  | (476)
Finite-lived intangible assets, net carrying value |  |  | 113
Software |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 509 |  | 693
Finite lived intangible assets accumulated impairment | (7) |  | (7)
Finite-lived intangible assets, accumulated amortization | (335) |  | (506)
Finite-lived intangible assets, net carrying value | 167 | 24 | 180
Trademarks |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 658 |  | 942
Finite lived intangible assets accumulated impairment | (2) |  | (2)
Finite-lived intangible assets, accumulated amortization | (182) |  | (499)
Finite-lived intangible assets, net carrying value | 474 | 68 | 441
User list |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 84 |  | 684
Finite lived intangible assets accumulated impairment | (2) |  | (2)
Finite-lived intangible assets, accumulated amortization | (79) |  | (679)
Finite-lived intangible assets, net carrying value | 3 |  | 3
Licensed copyrights |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 20,287 |  | 18,081
Finite-lived intangible assets, accumulated amortization | (14,000) |  | (11,324)
Finite-lived intangible assets, net carrying value | 6,287 | 903 | 6,757
Others |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross carrying value | 2,339 |  | 2,291
Finite lived intangible assets accumulated impairment | (408) |  | (7)
Finite-lived intangible assets, accumulated amortization | (975) |  | (862)
Finite-lived intangible assets, net carrying value | ¥ 956 | $ 138 | ¥ 1,422

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