Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities:
Net income	$ 129,901	$ 96,039
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	32,677	34,995
Noncash compensation	18,338	9,673
Noncash income from financial services	(1,599)	(2,272)
Deferred income taxes	(3,228)	(7,026)
Tax effect of share-based compensation exercises	(10,450)	(9,894)
Changes in current operating items:
Trade receivables	(20,014)	(43,894)
Inventories	(60,668)	(38,919)
Accounts payable	45,622	32,954
Accrued expenses	(69,436)	1,814
Income taxes payable/receivable	27,797	(3,133)
Prepaid expenses and others, net	(10,567)	(8,565)
Net cash provided by operating activities	78,373	61,772
Investing Activities:
Purchase of property and equipment	(41,591)	(40,601)
Investment in finance affiliate, net	2,158	3,873
Acquisition of businesses, net of cash acquired	(383)	(27,960)
Net cash used for investing activities	(39,816)	(64,688)
Financing Activities:
Borrowings under senior notes/capital lease obligations	1,968	100,000
Repayments under credit agreement/capital lease obligations	(1,422)	(200,000)
Repurchase and retirement of common shares	(48,634)	(32,856)
Cash dividends to shareholders	(50,749)	(30,675)
Tax effect of proceeds from share-based compensation exercises	10,450	9,894
Proceeds from stock issuances under employee plans	14,690	23,083
Net cash used for financing activities	(73,697)	(130,554)
Impact of currency translation on cash balances	(902)	1,717
Net decrease in cash and cash equivalents	(36,042)	(131,753)
Cash and cash equivalents at beginning of period	325,336	393,927
Cash and cash equivalents at end of period	$ 289,294	$ 262,174