Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities:
Net income	$ 155,468	$ 129,901
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	39,279	32,677
Noncash compensation	34,043	18,338
Noncash income from financial services	(2,384)	(1,599)
Noncash loss from other affiliates	998	0
Deferred income taxes	(6,356)	(3,228)
Tax effect of share-based compensation exercises	(9,868)	(10,450)
Changes in operating assets and liabilities:
Trade receivables	(18,297)	(20,014)
Inventories	(65,761)	(60,668)
Accounts payable	51,212	45,622
Accrued expenses	(84,105)	(69,436)
Income taxes payable/receivable	20,358	27,797
Prepaid expenses and others, net	(11,073)	(10,567)
Net cash provided by operating activities	103,514	78,373
Investing Activities:
Purchase of property and equipment	(93,720)	(41,591)
Investment in finance affiliate, net	4,026	2,158
Payments to Acquire Interest in Subsidiaries and Affiliates	(6,063)	0
Payments to Acquire Businesses, Net of Cash Acquired	(134,817)	(383)
Net cash used for investing activities	(230,574)	(39,816)
Financing Activities:
Proceeds from Long-term Capital Lease Obligations	1,432	1,968
Repayments of Long-term Capital Lease Obligations	1,873	1,422
Repurchase and retirement of common shares	(31,869)	(48,634)
Cash dividends to shareholders	(57,487)	(50,749)
Tax effect of proceeds from share-based compensation exercises	9,868	10,450
Proceeds from stock issuances under employee plans	10,219	14,690
Net cash used for financing activities	(69,710)	(73,697)
Impact of currency exchange rates on cash balances	(2,571)	(902)
Net decrease in cash and cash equivalents	(199,341)	(36,042)
Cash and cash equivalents at beginning of period	417,015	325,336
Cash and cash equivalents at end of period	$ 217,674	$ 289,294