Geographic and Product Data (Net Revenues from External Customers by Product Group) (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
Revenue from External Customer [Line Items] | |||
Net revenues from external customers | $ 2,240,723 | $ 2,043,658 | $ 1,817,423 |
Residential Roofing Products [Member]
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Revenue from External Customer [Line Items] | |||
Net revenues from external customers | 1,100,508 | 1,023,547 | 849,970 |
Non-Residential Roofing Products [Member]
|
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Revenue from External Customer [Line Items] | |||
Net revenues from external customers | 822,726 | 757,906 | 718,145 |
Complementary Building Products [Member]
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Revenue from External Customer [Line Items] | |||
Net revenues from external customers | $ 317,489 | $ 262,205 | $ 249,308 |