Annual report pursuant to Section 13 and 15(d)

Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Detail)

v2.4.0.8
Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Detail) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Operating Margin                      
Total Contribution Margin                 $ 1,921,100,000 $ 1,636,900,000 $ 1,275,200,000
Selling, general and administrative expense                 1,259,667,000 1,074,623,000 887,655,000
Interest expense                 16,736,000 9,864,000 9,664,000
Interest income                 6,195,000 7,373,000 2,247,000
Income before income taxes                 650,906,000 559,779,000 380,095,000
Income taxes                 186,944,000 144,820,000 87,212,000
Net income 112,200,000 111,900,000 132,000,000 107,900,000 110,100,000 107,500,000 108,600,000 88,800,000 463,962,000 414,959,000 292,883,000
United States [Member]
                     
Operating Margin                      
Total Contribution Margin                 359,500,000 286,300,000 257,000,000
Mexico [Member]
                     
Operating Margin                      
Total Contribution Margin                 205,600,000 191,100,000 131,700,000
South Korea [Member]
                     
Operating Margin                      
Total Contribution Margin                 199,400,000 163,100,000 103,000,000
Others [Member]
                     
Operating Margin                      
Total Contribution Margin                 906,500,000 810,000,000 618,500,000
Primary Reporting Segment [Member]
                     
Operating Margin                      
Total Contribution Margin                 1,671,000,000 1,450,500,000 1,110,200,000
China [Member]
                     
Operating Margin                      
Total Contribution Margin                 $ 250,100,000 $ 186,400,000 $ 165,000,000