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Components of Equity (Tables)
 6 Months Ended
Jun. 30, 2013
Stockholders' Equity Note [Abstract]  
Schedule of Components of Equity Disclosure
The components of equity for the six months ended June 30, 2013 and 2012 are as follows:
 
Shareholders’
equity
 
Noncontrolling
interest
 
Total
equity
Balance at December 31, 2012
$
2,027,699

 
4,871

 
2,032,570

Exercise of stock options
18,477

 
—

 
18,477

Shares repurchased under provisions of stock repurchase plans
(39,281
)
 
—

 
(39,281
)
Stock compensation expense
22,045

 
—

 
22,045

Tax benefits from stock plans, net
1,516

 
—

 
1,516

Net earnings
172,630

 
643

 
173,273

Other comprehensive loss
(20,839
)
 
(187
)
 
(21,026
)
Dividends paid ($.30 per share)
(61,899
)
 
—

 
(61,899
)
Purchase of noncontrolling interest
(507
)
 
(3,226
)
 
(3,733
)
Balance at June 30, 2013
$
2,119,841

 
2,101

 
2,121,942

 
 
 
 
 
 
Balance at December 31, 2011
$
2,003,638

 
6,431

 
2,010,069

Exercise of stock options
20,402

 
—

 
20,402

Shares repurchased under provisions of stock repurchase plans
(106,266
)
 
—

 
(106,266
)
Stock compensation expense
21,526

 
—

 
21,526

Tax benefits from stock plans, net
4,232

 
—

 
4,232

Net earnings
160,662

 
81

 
160,743

Other comprehensive (loss) income
(1,381
)
 
90

 
(1,291
)
Dividends paid ($.28 per share)
(59,358
)
 
—

 
(59,358
)
Balance at June 30, 2012
$
2,043,455

 
6,602

 
2,050,057