Summary of Accounting Policies - Property, Plant and Equipment Estimated Service Lives (Details 3)	12 Months Ended
	Dec. 31, 2015
Land improvements and buildings | Minimum
Summary of Accounting Policies
Useful life	15 years
Land improvements and buildings | Maximum
Summary of Accounting Policies
Useful life	30 years
Furniture, machinery and equipment | Minimum
Summary of Accounting Policies
Useful life	5 years
Furniture, machinery and equipment | Maximum
Summary of Accounting Policies
Useful life	15 years
Customer capital | Minimum
Summary of Accounting Policies
Useful life	5 years
Customer capital | Maximum
Summary of Accounting Policies
Useful life	10 years
Vehicles
Summary of Accounting Policies
Useful life	5 years
Computer hardware and software | Minimum
Summary of Accounting Policies
Useful life	5 years
Computer hardware and software | Maximum
Summary of Accounting Policies
Useful life	10 years