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v3.20.1

Segment Information (Revenue and Long-Lived Assets by Geographic Location) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 944.3 | $ 998.5 | $ 983.5 | $ 963.6 | $ 913.7 | $ 933.2 | $ 901.0 | $ 932.7 | $ 3,890.0 | $ 3,680.5 | $ 4,129.1
Long-Lived Assets | 1,797.5 |  |  |  | 1,831.1 |  |  |  | 1,797.5 | 1,831.1 |
Canada |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 43.9 | 47.9 | 48.3
Long-Lived Assets | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 |
United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 3,321.9 | 3,124.6 | 3,383.0
Long-Lived Assets | 1,684.7 |  |  |  | 1,737.8 |  |  |  | 1,684.7 | 1,737.8 |
Other Foreign |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 524.2 | 508.0 | $ 697.8
Long-Lived Assets | $ 112.8 |  |  |  | $ 93.3 |  |  |  | $ 112.8 | $ 93.3 |

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