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Contingencies (Federal Government's Lawsuit Narrative) (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency Accrual, Provision | $ 5.0 | $ 31.0 | $ 48.0 | $ 35.0
Federal Governments Lawsuit [Member] | Health Care Cost Recovery Litigation [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Federal Government Original Complaint Date |  |  | 1999 |
Loss contingency, period of occurrence |  |  | August 2006 |
Loss Contingency Accrual, Provision | $ 0.0 | $ 31.0 | $ 0.0 | $ 31.0
Amount of alleged annual costs health care programs, minimum |  |  | 20,000.0 |
Amount of disgorgement of profits requested in Federal Government lawsuit |  |  | $ 280,000.0 |
Document Repository Agreement date |  |  | December 2011 |
Loss contingency, amount of district court deposit |  |  | $ 3.1 |
Loss contingency installment period, years |  |  | 5 |

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