Accounting Policies (Recently Issued or Adopted Accounting Standards) (Details) $ in Millions	Dec. 31, 2015 USD ($)
Accounting Policies [Abstract]
Deferred gain on sale of property	$ 31.2

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

No definition available.

Name:	us-gaap_DeferredGainOnSaleOfProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant