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Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | $ 731.6 | $ 708.3
Accumulated Amortization | (288.2) | (305.2)
Net | 443.4 | 403.1
Certificates of need [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 148.3 | 113.7
Accumulated Amortization | (28.2) | (19.5)
Net | 120.1 | 94.2
Licenses [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 169.1 | 146.0
Accumulated Amortization | (82.2) | (71.6)
Net | 86.9 | 74.4
Noncompete agreements [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 65.6 | 63.5
Accumulated Amortization | (58.6) | (55.4)
Net | 7.0 | 8.1
Trade Name - Encompass [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 135.2 | 135.2
Accumulated Amortization | 0.0 | 0.0
Net | 135.2 | 135.2
Trade names [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 38.9 | 35.1
Accumulated Amortization | (19.4) | (16.4)
Net | 19.5 | 18.7
Internal-use Software [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 161.3 | 201.6
Accumulated Amortization | (89.3) | (132.3)
Net | 72.0 | 69.3
Market access assets [Member] |  |
Schedule of Intangible Assets by Major Class |  |
Gross Carrying Amount | 13.2 | 13.2
Accumulated Amortization | (10.5) | (10.0)
Net | $ 2.7 | $ 3.2

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