Debt Instrument, Accordion Feature, Increase Limit

No definition available.

Name:	swch_DebtInstrumentAccordionFeatureIncreaseLimit
Namespace Prefix:	swch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Accordion Feature, Increase Limit, Number of Instances

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Leverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Restricted Payment Basket, Amount

+ References

No definition available.

+ Details

Name:	swch_DebtInstrumentCovenantRestrictedPaymentBasketAmount
Namespace Prefix:	swch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Default, Holder Threshold, Percent

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Repurchase, Minimum Percent Of Holders, Tender Offer

+ References

No definition available.

+ Details

Name:	swch_DebtInstrumentRepurchaseMinimumPercentOfHoldersTenderOffer
Namespace Prefix:	swch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Repurchase Percentage

+ References

No definition available.

+ Details

Name:	swch_DebtInstrumentRepurchasePercentage
Namespace Prefix:	swch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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

- Details

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Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=swch_SeniorUnsecuredNotesDue2028Member
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
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Period Type:

- Details

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt - Narrative (Details)	1 Months Ended	3 Months Ended	12 Months Ended
Long-Term Debt - Narrative (Details)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 27, 2017 USD ($) instance
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 30,000,000.0	$ 30,000,000.0
Loss on extinguishment of debt			245,000	$ 0	$ 0
Estimated fair value of long-term debt		1,010,000,000.00	1,010,000,000.00	755,000,000.0
Long-term debt, gross		$ 1,000,000,000	$ 1,000,000,000	$ 755,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate				3.51%
Term Loan Facility
Debt Instrument [Line Items]
Interest rate		2.40%	2.40%	4.05%
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 500,000,000.0
Long-term debt, gross		$ 0	$ 0	$ 170,000,000
Term Loan Facility \| Term Loan
Debt Instrument [Line Items]
Principal amount	$ 400,000,000.0					$ 600,000,000.0
Loss on extinguishment of debt		200,000	200,000
Restricted payment basket	$ 50,000,000.0
Consolidated secured leverage ratio under covenant	4.00
Long-term debt, gross		400,000,000	400,000,000	585,000,000
Senior Unsecured Notes Due 2028 \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 600,000,000.0
Interest rate	3.75%
Repurchase percentage	101.00%
Percent of holders validly tendered in connection with any tender offer or other offer to purchase	90.00%
Holder threshold percentage in the event of default that automatically causes maturity	25.00%
Long-term debt, gross		600,000,000	600,000,000	$ 0
Senior Unsecured Notes Due 2028 \| Senior Notes \| Prior to September 15, 2023
Debt Instrument [Line Items]
Percent of aggregate principal amounts redeemable	40.00%
Redemption price percentage	103.75%
Senior Unsecured Notes Due 2028 \| Senior Notes \| On or after September 15, 2023 \| Maximum
Debt Instrument [Line Items]
Redemption price percentage	101.875%
Senior Unsecured Notes Due 2028 \| Senior Notes \| On or after September 15, 2023 \| Minimum
Debt Instrument [Line Items]
Redemption price percentage	100.00%
2017 Facilities
Debt Instrument [Line Items]
Number of times the available borrowing capacity may be increased \| instance							5
Increase limit							$ 75,000,000.0
2017 Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Available borrowing capacity		$ 500,000,000.0	$ 500,000,000.0