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Interim Financial Statements - Fair Value, Assets Held For Sale, Discontinued Operations (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value of Financial Instruments |  |
Carrying Value | $ 1,463.3 | $ 1,474.0
3.50% senior subordinated notes due 2025 |  |
Fair Value of Financial Instruments |  |
Interest rate (as a percent) | 3.50% |
Carrying Value | $ 545.1 | 544.7
Fair Value | $ 541.8 | 560.5
3.75% senior subordinated notes due 2029 |  |
Fair Value of Financial Instruments |  |
Interest rate (as a percent) | 3.75% |
Carrying Value | $ 494.5 | 494.3
Fair Value | 442.9 | 490.7
Mortgage facilities |  |
Fair Value of Financial Instruments |  |
Carrying Value | 325.9 | 353.8
Fair Value | $ 318.7 | $ 359.8

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