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Summary of Redeemable Noncontrolling Interest (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)
Temporary Equity Disclosure [Abstract]
Balance as of January 1	¥ 716	$ 104	¥ 11,022	¥ 5,492
Business combination (Note 3)	182	26	698
Other comprehensive (loss)				(335)
Issuance of subsidiary shares	100	14
Disposal of subsidiary shares				(2,376)
Accretion of redeemable noncontrolling interests	111	15	146	(17)
Conversion of convertible notes of iQIYI				8,258
Conversion of iQIYI preferred shares recognized as redeemable noncontrolling interests to ordinary shares			(11,150)
Balance as of December 31	¥ 1,109	$ 159	¥ 716	¥ 11,022

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- Definition

Temporary equity conversion of convertible notes of subsidiary.

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Temporary Equity Conversion of Redeemable Preferred Shares of Subsidiary to Ordinary Shares

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Adjustments to temporary equity resulting from disposal of subsidiary shares.

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Temporary Equity Dividends And Accretion To Redemption Value Adjustment

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Amount of increase in noncontrolling interest from a business combination.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Adjustments to temporary equity resulting from foreign currency translation adjustments.

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Value of new stock classified as temporary equity issued during the period.

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