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Asset Impairment (Details) (Marathon Property [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2014
Marathon Property [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment charge	$ 0.5

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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