LEGAL - Las Conchas Fire (Details) - Damages from Las Conchas fire $ in Millions		1 Months Ended	3 Months Ended
	Oct. 28, 2015	Jun. 30, 2011 plaintiff	Mar. 31, 2017 USD ($)
Litigation information
Number of plaintiff groups | plaintiff		6
Pending litigation
Litigation information
Liability insurance coverage | $			$ 100
Pending litigation | JMEC
Litigation information
Percentage negligent	75.00%
Pending litigation | Tri-State
Litigation information
Percentage negligent	20.00%
Pending litigation | United States Forest Service
Litigation information
Percentage negligent	5.00%