Finance Assets and Lessor Operating Leases (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Revenue recognition resume period (less than)	60 days
Allowance for Credit Losses
Balance Beginning	$ 20,222	$ 18,651
Amounts charged to expense	4,607	4,650
Write-offs and other	(2,678)	(3,521)
Balance Closing	$ 22,151	19,780
Sales-type lease receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Revenue recognition discontinuation period (more than)	120 days
Sales-type lease receivables | North America
Allowance for Credit Losses
Balance Beginning	$ 10,253	7,721
Amounts charged to expense	3,399	2,186
Write-offs and other	(516)	(1,145)
Balance Closing	13,136	8,762
Sales-type lease receivables | International
Allowance for Credit Losses
Balance Beginning	2,355	2,812
Amounts charged to expense	231	399
Write-offs and other	(702)	(127)
Balance Closing	$ 1,884	3,084
Loan receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Revenue recognition discontinuation period (more than)	90 days
Loan receivables | North America
Allowance for Credit Losses
Balance Beginning	$ 6,777	7,098
Amounts charged to expense	957	1,925
Write-offs and other	(1,335)	(2,073)
Balance Closing	6,399	6,950
Loan receivables | International
Allowance for Credit Losses
Balance Beginning	837	1,020
Amounts charged to expense	20	140
Write-offs and other	(125)	(176)
Balance Closing	$ 732	$ 984