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Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Detail) (USD $)
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3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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| Operating Margin | ||||
| Total Contribution Margin | $ 592,500,000 | $ 493,100,000 | $ 1,126,000,000 | $ 943,500,000 |
| Selling, general and administrative expenses | 400,107,000 | 306,310,000 | 764,827,000 | 602,703,000 |
| Interest expense, net | 5,559,000 | 3,169,000 | 10,932,000 | 4,542,000 |
| Income before income taxes | 186,798,000 | 183,537,000 | 350,346,000 | 336,269,000 |
| Income taxes | 43,636,000 | 51,586,000 | 88,311,000 | 96,387,000 |
| Net income | 143,162,000 | 131,951,000 | 262,035,000 | 239,882,000 |
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Reportable Geographical Components [Member] | United States [Member]
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| Operating Margin | ||||
| Total Contribution Margin | 99,500,000 | 93,600,000 | 194,200,000 | 189,000,000 |
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Reportable Geographical Components [Member] | Mexico [Member]
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| Operating Margin | ||||
| Total Contribution Margin | 64,000,000 | 49,000,000 | 122,600,000 | 92,900,000 |
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Reportable Geographical Components [Member] | South Korea [Member]
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| Operating Margin | ||||
| Total Contribution Margin | 56,400,000 | 55,000,000 | 111,600,000 | 97,000,000 |
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Reportable Geographical Components [Member] | Others [Member]
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| Operating Margin | ||||
| Total Contribution Margin | 266,800,000 | 226,100,000 | 531,300,000 | 444,000,000 |
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Reportable Geographical Components [Member] | Primary Reporting Segment [Member]
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| Operating Margin | ||||
| Total Contribution Margin | 486,700,000 | 423,700,000 | 959,700,000 | 822,900,000 |
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Reportable Geographical Components [Member] | China [Member]
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| Operating Margin | ||||
| Total Contribution Margin | $ 105,800,000 | $ 69,400,000 | $ 166,300,000 | $ 120,600,000 |