Stockholders'/Members' Equity (Details)				9 Months Ended	12 Months Ended
	Dec. 29, 2017 USD ($) $ / shares	Dec. 18, 2017 $ / shares	Oct. 11, 2017 USD ($)	Oct. 10, 2017 USD ($) $ / shares	Dec. 31, 2017 USD ($) vote $ / shares shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Class of Stock [Line Items]
Par value of common stock (in dollars per share) | $ / shares				$ 0.001
Shares of preferred stock authorized (in shares) | shares					10,000,000
Par value of preferred stock (in dollars per share) | $ / shares					$ 0.001
Distributions declared | $				$ 174,235,000		$ 28,110,000	$ 18,210,000
Switch, Ltd.
Class of Stock [Line Items]
Total distribution to holders of record | $	$ 503,000
Other Holders
Class of Stock [Line Items]
Total distribution to holders of record | $	$ 3,000,000
Switch, Ltd.
Class of Stock [Line Items]
Distribution paid (in dollars per share) | $ / shares	$ 0.014
Total distribution to holders of record | $	$ 3,500,000				$ 185,300,000
Distributions declared | $					185,400,000
Distributions payable | $					152,000
Switch, Ltd. | Cash Distribution
Class of Stock [Line Items]
Distributions declared | $			$ 8,200,000		112,000,000
Switch, Ltd. | Return of Capital
Class of Stock [Line Items]
Distributions declared | $					$ 73,400,000
Class A
Class of Stock [Line Items]
Shares of common stock authorized (in shares) | shares					750,000,000
Par value of common stock (in dollars per share) | $ / shares					$ 0.001
Number of votes per share held | vote					1
Dividends declared (in dollars per share) | $ / shares		$ 0.014
Dividends paid (in dollars per share) | $ / shares	$ 0.014
Class B
Class of Stock [Line Items]
Shares of common stock authorized (in shares) | shares					300,000,000
Par value of common stock (in dollars per share) | $ / shares					$ 0.001
Number of votes per share held | vote					1
Class C
Class of Stock [Line Items]
Shares of common stock authorized (in shares) | shares					75,000,000
Par value of common stock (in dollars per share) | $ / shares					$ 0.001
Minimum | Class C
Class of Stock [Line Items]
Number of votes per share held | vote					1
Maximum | Class C
Class of Stock [Line Items]
Number of votes per share held | vote					10