Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Parenthetical) (Details) - CNY (¥) ¥ in Millions	1 Months Ended	12 Months Ended
Feb. 28, 2021	Feb. 29, 2020	Dec. 31, 2020
Accrued Expenses And Other Current Liabilities Disclosure [Line Items]
Cash consideration on obtaining land use right	¥ 516.0	¥ 516.0	¥ 1,000.0

The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireLand
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration