|
Business and Credit Concentrations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
|
Sep. 30, 2013
Customer
|
Sep. 30, 2012
Customer
|
Sep. 30, 2013
Customer
|
Sep. 30, 2012
Customer
|
Dec. 31, 2012
|
|
| Concentration Risk [Line Items] | |||||
| Losses due to company's credit write-offs | $ 1.3 | $ 0.3 | $ 2.3 | $ 1.5 | |
| Net assets held outside the United States | 379.1 | 379.1 | 387.2 | ||
| Number of customers accounting for more than 10% of sales | 0 | 0 | 0 | 0 | |
| Number of customers accounting for more than 10% of accounts receivable | 0 | 0 | |||
| Number of largest customers | 5 | 5 | 5 | 5 | |
|
Sales [Member] | Customer Concentration Risk [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Percentage of net sales to largest customers | 17.90% | 16.70% | 18.30% | 19.20% | |
|
United States [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Accounts receivable | 152.5 | 152.5 | 111.8 | ||
|
Foreign Countries [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Accounts receivable | $ 133.9 | $ 133.9 | $ 118.8 | ||