|
Employee Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Contributions based on wages paid to covered employees | $ 8.1 | $ 7.1 | $ 7.1 |
| Voluntary contributions to the 401(k) profit-sharing plans and trusts | 5.3 | 5.1 | 5.1 |
|
Borgata
|
|||
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Multiemployer plan, employer share of unfunded liabilities | $ 68.3 | ||