Leases - Maturities of operating and finance lease liabilities (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2023 USD ($)
Operating Leases
2023		¥ 1,574,692
2024	¥ 2,658,392	1,426,176
2025	1,949,316	1,213,535
2026	1,724,905	1,038,903
2027	1,449,608	837,505
2028	1,173,595	768,279
Thereafter	8,241,769	4,499,959
Total minimum lease payments	17,197,585	11,359,049
Less: Interest	(5,384,372)	(3,815,985)
Present value of lease obligations	11,813,213	7,543,064
Less: Current portion	(1,743,156)	(1,025,968)	$ (245,518)
Long-term portion of lease obligations	10,070,057	6,517,096	$ 1,418,338
Finance Leases
2023		35,151
2024	28,395	17,299
2025	11,342	6,717
2026	10,588	6,277
2027	8,899	4,737
2028	4,880	294
Thereafter	2,319	1,856
Total minimum lease payments	66,423	72,331
Less: Interest	(18,939)	(27,265)
Present value of lease obligations	47,484	45,066
Less: Current portion	(25,311)	(30,609)
Long-term portion of lease obligations	22,173	14,457
Short-term operating leases	¥ 537,432	¥ 304,213

Present value of lessee's discounted obligation for lease payments from finance lease.

No definition available.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

No definition available.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after sixth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in sixth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach)

+ References

No definition available.

+ Details

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after sixth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in sixth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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No definition available.

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- Definition

Amount of lessee's undiscounted obligation for lease payments for finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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No definition available.

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Balance Type:	na
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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

+ Details

Name:	us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow for short-term lease payment excluded from lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-5

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