| **Contingencies and Other Commitments (Details) $ in Millions**            |        | 3 Months Ended | 6 Months Ended |         |         |        |
|----------------------------------------------------------------------------|--------|----------------|----------------|---------|---------|--------|
||
| **Loss Contingencies [Line Items]**                                        |   |           |           |    |    |   |   |   |
| Other operating expenses                                                   |   | $ 121.5        | $ 104.2        | $ 240.7 | $ 207.4 |   |   |   |
| Honts lawsuit [Member]                                                     |   |           |           |    |    |   |   |   |
| **Loss Contingencies [Line Items]**                                        |   |           |           |    |    |   |   |   |
| Loss Contingency, Damages Awarded, Value                                   | $ 20.0 |           |           |    |    |   |   |   |
| Loss Contingency Accrual                                                   |   | 21.0           |           | 21.0    |    |   |   |   |
| Accrued Professional Fees                                                  |   | 1.0            |           | 1.0     |    |   |   |   |
| Loss Contingency, Receivable, Current                                      |   | 15.0           |           | 15.0    |    |   |   |   |
| Other operating expenses                                                   |   | 5.7            |           | $ 5.7   |    |   |   |   |
| Malpractice Insurance, Maximum Coverage Per Incident                       |   | $ 6.0          |           |    |    |   |   |   |
| HHS-OIG Investigation [Member]                                             |   |           |           |    |    |   |   |   |
| **Contingencies (Textual) [Abstract]**                                     |   |           |           |    |    |   |   |   |
| Number of hospitals that received subpoenas                                |   |           |           |    |    |   | 7 | 4 |
| Number of patient medical records requested for each hospital in subpoenas |   |           |           |    |    |   |   | 100 |
| Number of hospitals that received supplemental subpoenas                   |   |           |           |    |    |   | 2 |   |
| Number of additional patient medical records requested                     |   |           |           |    |    | 70     |   |   |
| Compliance Threshold Under Health Care Act                                 |   | 60.00%         |           | 60.00%  |    |   |   |   |

| X                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Compliance threshold under the Medicare, Medicaid, and State Children's Health Insurance Program (SCHIP) Extension Act of 2007 as of the blance sheet date.
+ References
No definition available.
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| X                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Contingencies.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of patient medical records requested for each hospital in subpoenas.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of additional patient medical records requested.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of hospitals that received subpoenas in connection with an investigation of alleged improper or fraudulent claims submitted to Medicare and Medicaid.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of hospitals that received supplemental subpoenas to cover the new time period of January 2008 through December 2013
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of loss contingency liability.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of damages awarded to the plaintiff in the legal matter.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of receivable related to a loss contingency accrual that is expected to be collected within one year or the normal operating cycle, if longer. For example, an insurance recovery receivable.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Maximum coverage per malpractice claim provided by the insurance arrangement.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.
+ References
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| X                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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