| **Divestitures and Discontinued Operations Additional Information (Details) - PDCM Divestiture - PDCM Divestiture - USD ($) $ in Millions** | Oct. 15, 2014 | Oct. 14, 2014 |
|---------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Additional Disclosures**                                                                                                                  |          |          |
| Divestiture Sale Price After Adjustment                                                                                                     | $ 192.0       |          |
| Cash received from PDCM divestiture ($ million)                                                                                             | 153.0         |          |
| Promissory note from PDCM divestiture ($ million)                                                                                           | 39.0          |          |
| Pre-tax gain on sale of properties                                                                                                          | $ 76.3        |          |
| Ownership interest in PDCM                                                                                                                  |          | 50.00%        |

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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Divestiture Sale Price After Adjustment. Net consideration, after purchase price adjustments, to be received upon sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
+ References
No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
+ References
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| - 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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| - Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.
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| - Definition
Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).
+ References
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