Incentive Plan - Summary of activity for Service-Based Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Units
Granted (shares)	151,093	128,049	120,368
Restricted stock
Units
Unvested beginning of period (shares)	783,219
Vested (shares)	(475,702)
Cancelled or expired (shares)	(63,724)
Unvested end of period (shares)	509,369	783,219
Weighted-Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share)	$ 123.04
Vested (in dollars per share)	123.17
Cancelled or expired (in dollars per share)	129.62
Unvested, end of period (in dollars per share)	$ 129.52	$ 123.04
Weighted-Average Remaining Contractual Life (Years)	2 years 2 months 12 days
Aggregate Intrinsic Value, unvested	$ 90,092
Intrinsic value of units	$ 59,000	$ 53,400	$ 14,000
Award vesting period	4 years
Restricted stock \| Interxion Holding N.V.
Units
Granted (shares)	265,576
Weighted-Average Grant Date Fair Value
Granted (in dollars per share)	$ 137.30

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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