Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Significant Accounting Policies [Abstract]

Schedule Of Property, Plant, And Equipment, Useful Lifes

Depreciation of property, plant and equipment is recorded on a straight-line basis over the following estimated useful lives:

Functional Class of Property	Useful Lives (Years)
Gathering and Transmission Systems	20 - 40
Compression Equipment	2 - 30
Gas Plants and Buildings	5 - 20
Other Property, Plant and Equipment	3 - 15