Other Liabilities - Performance Obligations (Details) $ in Millions	Jun. 30, 2021 USD ($)
Performance obligations
Remaining performance obligations	$ 16.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Performance obligations
Remaining performance obligations	$ 1.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | Maximum
Performance obligations
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Performance obligations
Remaining performance obligations	$ 7.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Performance obligations
Remaining performance obligations	$ 5.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01
Performance obligations
Remaining performance obligations	$ 2.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period