Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities:
Net income	$ 377,292	$ 312,310	$ 227,575
Loss from discontinued operations	3,777	0	0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	92,100	70,580	66,390
Noncash compensation	57,893	35,420	20,548
Noncash income from financial services	(4,983)	(3,899)	(4,444)
Noncash loss from other affiliates	7,414	179	133
Deferred income taxes	(5,892)	(28,901)	(16,946)
Tax effect of share-based compensation exercises	(28,621)	(29,892)	(23,120)
Changes in operating assets and liabilities:
Trade receivables	(54,055)	2,413	(23,115)
Inventories	(52,049)	(36,029)	(49,973)
Accounts payable	51,519	21,371	27,232
Accrued expenses	53,278	39,269	80,668
Income taxes payable/receivable	33,398	51,120	(1,343)
Prepaid expenses and others, net	(31,919)	(17,831)	(1,075)
Cash provided by continuing operations	499,152	416,110	302,530
Cash used for discontinued operations	(6,912)	0	0
Net cash provided by operating activities	492,240	416,110	302,530
Investing Activities:
Purchase of property and equipment	(251,401)	(103,083)	(84,484)
Investment in finance affiliate	(19,251)	(18,400)	(12,588)
Distributions from finance affiliate	12,005	7,562	11,950
Investment in other affiliates	(10,934)	(7,996)	(5,000)
Proceeds from sale of investments	0	0	876
Acquisition of businesses, net of cash acquired	(137,104)	(41,135)	(51,899)
Net cash used for investing activities	(406,685)	(163,052)	(141,145)
Financing Activities:
Borrowings under debt arrangements / capital lease obligations	776,669	2,437	100,000
Repayments under debt arrangements / capital lease obligations	(597,492)	(7,478)	(202,333)
Repurchase and retirement of common shares	(530,033)	(127,525)	(132,372)
Cash dividends to shareholders	(113,722)	(101,534)	(61,585)
Tax effect of proceeds from share-based compensation exercises	28,621	29,892	23,120
Proceeds from stock issuances under employee plans	26,922	41,696	45,654
Net cash used for financing activities	(409,035)	(162,512)	(227,516)
Impact of currency exchange rates on cash balances	(1,287)	1,133	(2,460)
Net (decrease) increase in cash and cash equivalents	(324,767)	91,679	(68,591)
Cash and cash equivalents at beginning of period	417,015	325,336	393,927
Cash and cash equivalents at end of period	92,248	417,015	325,336
Supplemental Cash Flow Information:
Interest paid on debt borrowings	6,076	5,932	3,350
Income taxes paid	$ 162,647	$ 143,510	$ 132,088