Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Percentage of LIFO Inventory	70.00%	70.00%
Rentals Revenue
Amortization of initial direct costs	$ 7,000	$ 8,000	$ 10,000
Initial direct costs included in rental property and equipment	$ 11,000	13,000
Deferred Marketing Costs
Capitalization period for deferred marketing costs	8 years
Deferred costs expensed	$ 15,000	18,000	23,000
Deferred marketing costs included in other assets	38,000	43,000
Accounts receivable	455,527	476,583
Other current assets and prepayments	68,637	67,400
Property, plant and equipment, net	(314,603)	(330,088)
Short-term finance receivables	(893,950)	(918,383)
Long-term finance receivables	(673,207)	(760,657)
Cash and cash equivalents	(764,522)	(640,190)	(1,043,439)	$ (880,738)
Short-term investments	$ (38,448)	(127,388)	$ (59,814)
Minimum
Property, Plant and Equipment [Line Items]
Finite-lived intangible assets, estimated useful lives	3 years
Maximum
Property, Plant and Equipment [Line Items]
Finite-lived intangible assets, estimated useful lives	15 years
Restatement Adjustment
Deferred Marketing Costs
Accounts receivable		19,000
Other current assets and prepayments		3,000
Property, plant and equipment, net		3,000
Short-term finance receivables		17,000
Long-term finance receivables		2,000
Cash and cash equivalents		10,000
Short-term investments		10,000
Buildings
Property, Plant and Equipment [Line Items]
Estimated useful lives	50 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Rental equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	4 years
Rental equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	6 years
Computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Software development costs | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Software development costs | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Accounting Standards Update 2015-03 | Other Assets
Deferred Marketing Costs
Debt issuance cost		18,000
Accounting Standards Update 2015-03 | Long-term Debt
Deferred Marketing Costs
Debt issuance cost		$ 18,000