Fair Value Measurements (Details) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2016
USD ($)
joint_venture
|
Dec. 31, 2015
USD ($)
|
|
| Schedule of Trading Security [Line Items] | ||
| Number of joint ventures | joint_venture | 2 | |
| Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] | Management [Member] | ||
| Schedule of Trading Security [Line Items] | ||
| Maximum percentage of participants' compensation which is deferrable (as a percent) | 100.00% | |
| Balance of the plan which was fully funded | $ | $ 5.4 | $ 5.8 |
| X | ||||||||||
- Definition Represents the maximum percentage of participants' compensation that is deferrable by participants under the deferred compensation plan. No definition available.
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| X | ||||||||||
- Definition Number of Joint Ventures With Redeemable Noncontrolling Interests No definition available.
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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. No definition available.
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| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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