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Summary Of Significant Accounting Policies - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Service Fee Credit | $ 80.0 |  |
Sales-type Lease, Lease Receivable, Extended Payment | 15.0 |  |
Accounts Receivable, Extended Payment | 181.0 |  |
Accounts Receivable, Deferred Lease Billing and Extended Payments, Outstanding | 19.0 |  |
Restricted cash | 17.9 | $ 18.0 |
Depreciation expense | $ 280.0 | 221.0 | $ 157.0
Number of operating segments | segment | 1 |  |
Performance obligation period | The Company’s system sale arrangements generally include a five-year period of service. The first year of service is generally free and included in the system sale arrangement, and the remaining four years are generally included at a stated service price. |  |
System sales arrangement, warranty period | 1 year |  |
Capitalized contract acquisition costs | $ 71.8 | $ 53.1 |
Market-based implied volatility (period) | 1 year |  |
Market-based implied volatility (percent) | 100.00% |  |
Cash flow hedges de-designated (period) | 2 months |  |
Likelihood of tax benefits being realized upon ultimate settlement | 50.00% |  |
Long-lived assets, percent | 84.00% | 83.00% |
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life, intangible asset | 2 years |  |
Sales-type leases term | 24 months |  |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life, intangible asset | 9 years |  |
Sales-type leases term | 84 months |  |
Derivative, term of contract | 12 months |  |
Maximum | Internal use software |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Useful Lives | 5 years |  |
Accounts Receivable | Geographic Concentration Risk | U.S. |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Concentration risk, percentage | 67.00% |  |
Total Revenue | Geographic Concentration Risk | U.S. |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Concentration risk, percentage | 67.00% | 68.00% | 70.00%
Total Revenue | Geographic Concentration Risk | Outside of U.S. (“OUS”) |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Concentration risk, percentage | 33.00% | 32.00% | 30.00%

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