Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2012
Minimum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	3 years
Minimum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	5 years
Minimum [Member] | Rental equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	3 years
Minimum [Member] | Leased equipment and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	3 years
Maximum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	7 years
Maximum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	25 years
Maximum [Member] | Rental equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	5 years
Maximum [Member] | Leased equipment and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment useful life, Minimum	10 years