Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income	$ 75,464	$ 60,078
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	19,906	16,807
Noncash compensation	10,351	7,066
Noncash income from financial services	(1,052)	(743)
Noncash loss from other affiliates	412	0
Deferred income taxes	(1,170)	(2,006)
Tax effect of share-based compensation exercises	(5,379)	(6,484)
Changes in operating assets and liabilities:
Trade receivables	(10,393)	(23,110)
Inventories	(26,897)	(13,249)
Accounts payable	46,342	35,452
Accrued expenses	(80,823)	(92,236)
Income taxes payable/receivable	21,463	31,063
Prepaid expenses and others, net	(450)	(13,300)
Net cash provided by (used for) operating activities	47,774	(662)
Investing Activities:
Purchase of property and equipment	(40,113)	(20,957)
Investment in finance affiliate, net	1,607	(1,227)
Net cash used for investing activities	(38,506)	(22,184)
Financing Activities:
Proceeds from Long-term Capital Lease Obligations	119	1,319
Repayments of Long-term Capital Lease Obligations	750	766
Repurchase and retirement of common shares	(25,687)	(5,871)
Cash dividends to shareholders	(28,662)	(25,328)
Tax effect of proceeds from share-based compensation exercises	5,379	6,484
Proceeds from stock issuances under employee plans	4,995	6,529
Net cash used for financing activities	(44,606)	(17,633)
Impact of currency exchange rates on cash balances	(927)	1,032
Net decrease in cash and cash equivalents	(36,265)	(39,447)
Cash and cash equivalents at beginning of period	417,015	325,336
Cash and cash equivalents at end of period	$ 380,750	$ 285,889