Fair Value (Narrative) (Details) - Level 1 - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
---|---|---|
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Fixed rate debt | $ 130.0 | $ 170.0 |
Carrying value | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Fixed rate debt | $ 2,082.3 | $ 1,587.6 |