Geographic Information (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
[1] | Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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Segment Reporting Information | ||||||||||||||||||
Consolidated revenue | $ 564.4 | [1] | $ 601.3 | $ 600.2 | $ 612.5 | $ 604.1 | [2] | $ 585.7 | $ 570.9 | $ 544.3 | $ 2,378.4 | $ 2,305.0 | $ 2,194.6 | |||||
Fixed Assets (net) | 104.3 | 111.0 | 104.3 | 111.0 | 110.1 | |||||||||||||
United States | ||||||||||||||||||
Segment Reporting Information | ||||||||||||||||||
Consolidated revenue | 1,611.7 | 1,571.4 | 1,477.5 | |||||||||||||||
Fixed Assets (net) | 87.1 | 97.8 | 87.1 | 97.8 | 97.3 | |||||||||||||
United Kingdom | ||||||||||||||||||
Segment Reporting Information | ||||||||||||||||||
Consolidated revenue | 628.8 | 587.3 | 566.4 | |||||||||||||||
Fixed Assets (net) | 15.7 | 11.4 | 15.7 | 11.4 | 9.9 | |||||||||||||
Other | ||||||||||||||||||
Segment Reporting Information | ||||||||||||||||||
Consolidated revenue | 137.9 | 146.3 | 150.7 | |||||||||||||||
Fixed Assets (net) | $ 1.5 | $ 1.8 | $ 1.5 | $ 1.8 | $ 2.9 | |||||||||||||
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