|
Income Taxes - Unrecognized Tax Benefits (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Income Tax Disclosure [Abstract] | ||
| Beginning Balance | $ 6.4 | $ 6.4 |
| Change in balances related to tax positions | ||
| Ending Balance | $ 6.4 | $ 6.4 |