Finance Assets and Lessor Operating Leases (Finance Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	$ (35,869)	$ (19,651)	$ (20,222)	$ (18,633)
Net investment in receivables	1,173,342	1,255,130
North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net investment in receivables	995,320	1,059,926
International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net investment in receivables	178,022	195,204
Sales-type lease receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	1,206,929	1,280,054
Unguaranteed residual values	48,545	53,723
Unearned income	(337,045)	(385,169)
Allowance for credit losses	(28,923)	(13,005)
Net investment in receivables	889,506	935,603
Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	994,985	1,055,852
Unguaranteed residual values	36,405	41,934
Unearned income	(275,359)	(319,281)
Allowance for credit losses	(22,917)	(10,920)	(10,253)	(7,721)
Net investment in receivables	733,114	767,585
Sales-type lease receivables | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	211,944	224,202
Unguaranteed residual values	12,140	11,789
Unearned income	(61,686)	(65,888)
Allowance for credit losses	(6,006)	(2,085)	(2,355)	(2,794)
Net investment in receivables	156,392	168,018
Loan receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	290,782	326,173
Allowance for credit losses	(6,946)	(6,646)
Net investment in receivables	283,836	319,527
Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	268,690	298,247
Allowance for credit losses	(6,484)	(5,906)	(6,777)	(7,098)
Net investment in receivables	262,206	292,341
Loan receivables | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	22,092	27,926
Allowance for credit losses	(462)	(740)	$ (837)	$ (1,020)
Net investment in receivables	$ 21,630	$ 27,186