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Supplemental Financial Information (Repair And Maintenance Expense Related To Continuing Operations) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Supplemental Financial Information [Abstract]
Repair and maintenance expense	$ 357.2us-gaap_CostOfPropertyRepairsAndMaintenance	$ 287.8us-gaap_CostOfPropertyRepairsAndMaintenance	$ 276.3us-gaap_CostOfPropertyRepairsAndMaintenance

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- Definition

The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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