Adjustments to additional paid in capital purchase of capped call.

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- Definition

Debt instrument convertible ratio basis amount.

+ References

No definition available.

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- Definition

Debt instrument, liability accreted remaining period.

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No definition available.

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- Definition

Represents the principal amount of debt instrument.

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No definition available.

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- Definition

Debt instrument, underwriting discounts and offering expenses.

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No definition available.

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Number of business days.

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- Definition

Percentage of principal amount of convertible notes is equal to repurchase price.

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No definition available.

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- Definition

Proceeds from issuance of debt initial amount.

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No definition available.

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- Definition

Purchase price of capped call options.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Date the debt instrument was repurchased, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Convertible Senior Notes - Additional Information (Details) $ / shares in Units, ¥ in Thousands			12 Months Ended
	Dec. 04, 2018 CNY (¥) Day	Dec. 04, 2018 USD ($) Day	Dec. 31, 2018 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 04, 2018 USD ($) $ / shares	Dec. 31, 2017 CNY (¥)
Debt Instrument [Line Items]
Cost of capped call recorded as reduction in additional paid-in capital \| ¥			¥ (464,825)
Net carrying amount of the liability component			4,712,284	$ 685,373,000		¥ 0
Convertible Senior Notes
Debt Instrument [Line Items]
Debt instrument, principal amount			¥ 5,158,700	750,300,000	$ 750,000,000
Debt instrument, payment terms			The Notes are senior, unsecured obligations of the Company, and interest is payable semi-annually in cash at a rate of 3.75% per annum on June 1 and December 1 of each year, beginning on June 1, 2019.
Debt instrument, frequency of periodic payment	semi-annually	semi-annually
Annual interest rate	3.75%				3.75%
Loan agreement expiration date	Dec. 01, 2023	Dec. 01, 2023
Debt Instrument, repurchase date	Dec. 01, 2021	Dec. 01, 2021
Percentage of repurchase price is equal to principal amount of convertible notes	100.00%	100.00%
Effective interest rate	7.04%				7.04%
Proceeds from issuance of notes	¥ 5,034,663	$ 736,700,000
Proceeds from issuance of notes, initial amount \| $		$ 750,000,000
Underwriting discounts and offering expenses	¥ 91,062				$ 13,300,000
Unamortized debt discount			¥ 446,400	64,900,000
Net carrying amount of the liability component			4,712,300	685,400,000
Carrying amount of the equity component			¥ 361,600	$ 52,600,000
Liability accreted remaining period			2 years 11 months 1 day
Convertible Senior Notes \| ADS
Debt Instrument [Line Items]
Debt instrument, initial conversion rate	37.1830	37.1830
Debt instrument, conversion basis principle amount \| $		$ 1,000
Debt instrument, initial conversion price \| $ / shares					$ 26.89
Debt instrument, convertible threshold trading days	20	20
Debt instrument, convertible threshold consecutive trading days	30	30
Debt instrument, convertible threshold percentage	130.00%	130.00%
Number of business days	5	5
Product percentage of closing sale price	98.00%	98.00%
Purchase price of capped call options \| $		$ 67,500,000
Capped call options cap price \| $ / shares					38.42
Cost of capped call recorded as reduction in additional paid-in capital	¥ 464,825	$ 67,500,000
Convertible Senior Notes \| ADS \| Redemption Period
Debt Instrument [Line Items]
Debt instrument, convertible threshold consecutive trading days	10	10