Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 261,340	$ 111,850	$ 426,318
Restructuring payments	(40,804)	(64,930)	(62,086)
Special pension plan contribution	0	(36,731)	0
Net tax payments from other investments	0	0	(20,602)
Adjustments to reconcile net income to net cash provided by operating activities:
Restructuring charges and asset impairments	59,431	63,296	25,782
Goodwill impairment	0	171,092	0
Depreciation and amortization	182,336	178,486	173,312
Loss (gain) on sale of businesses	0	5,786	(105,826)
Gain on sale of technology	(6,085)	0	0
Gain on sale of leveraged lease assets, net of tax		0	(2,152)
Gain on debt forgiveness	0	(10,000)	0
Stock-based compensation	24,389	14,882	21,049
Deferred tax (benefit) provision	(23,882)	3,940	40,184
Changes in operating assets and liabilities, net of acquisitions/divestitures:
(Increase) decrease in accounts receivable	(20,590)	22,559	(35,925)
Decrease in finance receivables	125,991	119,883	95,341
Decrease (increase) in inventories	5,565	(6,995)	(7,621)
Decrease (increase) in other current assets and prepayments	8,743	7,260	(10,557)
Decrease in accounts payable and accrued liabilities	(14,084)	(59,450)	(94,722)
(Decrease) increase in current and non-current income taxes	(16,013)	(1,035)	21,567
(Decrease) increase in advance billings	(26,029)	(40,248)	1,344
Other, net	(24,495)	16,477	57,583
Net cash provided by operating activities	495,813	496,122	522,989
Cash flows from investing activities:
Purchases of available-for-sale securities	(125,055)	(212,810)	(205,256)
Proceeds from sales/maturities of available-for-sale securities	113,501	211,696	207,063
Net change in short-term and other investments	(8,284)	75,654	(69,017)
Capital expenditures	(170,990)	(160,831)	(166,746)
Proceeds from sale of assets	5,458	17,671	52,110
Reserve account deposits	10,954	(2,183)	(24,202)
Proceeds from sale of businesses, net of cash transferred	0	0	289,211
Acquisitions, net of cash acquired	(482,853)	(37,842)	(393,695)
Other investing activities	(5,751)	(6,908)	7,339
Net cash used in investing activities	(663,020)	(115,553)	(303,193)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,436,660	894,744	150,950
Principal payments of long-term obligations	(964,550)	(371,007)	(516,070)
(Decrease) increase in short-term borrowings	0	(90,000)	90,000
Dividends paid to stockholders	(139,490)	(140,608)	(150,114)
Dividends paid to noncontrolling interests	0	(18,528)	(18,375)
Common stock repurchases	0	(197,267)	(131,719)
Redemption of noncontrolling interests	0	(300,000)	0
Other financing activities	35,127	(6,863)	(3,330)
Net cash provided by (used in) financing activities	367,747	(229,529)	(578,658)
Effect of exchange rate changes on cash and cash equivalents	43,959	(26,708)	(44,387)
Increase (decrease) in cash and cash equivalents	244,499	124,332	(403,249)
Cash and cash equivalents at beginning of period	764,522	640,190	1,043,439
Cash and cash equivalents at end of period	1,009,021	764,522	640,190
Cash interest paid	169,279	150,567	165,287
Cash income tax payments, net of refunds	$ 53,247	$ 127,299	$ 138,877