Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 3,733,507us-gaap_SalesRevenueNet	$ 3,326,106us-gaap_SalesRevenueNet	$ 3,133,577us-gaap_SalesRevenueNet
Cost of sales	1,836,105us-gaap_CostOfGoodsAndServicesSold	1,606,661us-gaap_CostOfGoodsAndServicesSold	1,519,053us-gaap_CostOfGoodsAndServicesSold
Gross profit	1,897,402us-gaap_GrossProfit	1,719,445us-gaap_GrossProfit	1,614,524us-gaap_GrossProfit
Operating and administrative expenses	1,110,776	1,007,431	941,236
Gain on sale of property and equipment	(964)	(643)	(403)
Operating income	787,590us-gaap_OperatingIncomeLoss	712,657us-gaap_OperatingIncomeLoss	673,691us-gaap_OperatingIncomeLoss
Interest income	759us-gaap_InvestmentIncomeInterest	924us-gaap_InvestmentIncomeInterest	464us-gaap_InvestmentIncomeInterest
Interest expense	(915)us-gaap_InterestExpense	(113)us-gaap_InterestExpense	0us-gaap_InterestExpense
Earnings before income taxes	787,434	713,468	674,155
Income tax expense	293,284us-gaap_IncomeTaxExpenseBenefit	264,832us-gaap_IncomeTaxExpenseBenefit	253,619us-gaap_IncomeTaxExpenseBenefit
Net earnings	$ 494,150us-gaap_NetIncomeLoss	$ 448,636us-gaap_NetIncomeLoss	$ 420,536us-gaap_NetIncomeLoss
Basic net earnings per share	$ 1.67us-gaap_EarningsPerShareBasic	$ 1.51us-gaap_EarningsPerShareBasic	$ 1.42us-gaap_EarningsPerShareBasic
Diluted net earnings per share	$ 1.66us-gaap_EarningsPerShareDiluted	$ 1.51us-gaap_EarningsPerShareDiluted	$ 1.42us-gaap_EarningsPerShareDiluted
Basic weighted average shares outstanding	296,490,378	296,754,160	296,089,348
Diluted weighted average shares outstanding	297,313,244	297,683,588	297,150,950

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(a),(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688