Borrowings to fund acquisition.

No definition available.

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Namespace Prefix:	ck1711929_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of real estate transactions.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck1711929_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow from the acquisition of property as primarily intended to generate income for its owner.

+ References

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

+ Details

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

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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Subsequent Events - Additional Information (Details) $ in Thousands		3 Months Ended	9 Months Ended
	Nov. 12, 2021 USD ($) Transaction	Jun. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Transaction	Sep. 30, 2020 USD ($)
Subsequent Event [Line Items]
Payments to acquire real estate		$ 59,000
Number of real estate transactions \| Transaction			15
Proceeds from issuance of common stock, net			$ 3,583,025	$ 556,857
Subsequent Event
Subsequent Event [Line Items]
Payments to acquire real estate	$ 4,900,000
Number of real estate transactions \| Transaction	5
Subsequent Event \| Primary Offering
Subsequent Event [Line Items]
Proceeds from issuance of common stock, net	$ 6,900,000
Subsequent Event \| Revolving Credit Facility and Line of Credit \| Barclays RA
Subsequent Event [Line Items]
Borrowings to fund acquisition	$ 758,900