|
Fair Value Of Financial Instruments (Summary Of Fair-Value Measurements Of Non-Financial Assets) (Parenthetical) (Details) (Level 3 [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2011
|
|
|
Land Under Development And Homes Completed And Under Construction [Member]
|
|
| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | |
| Carrying value of inventory | $ 129.6 |
| Fair value of inventory | 94.8 |
| Total impairments charges | 34.8 |
|
Inventory Held For Future Development [Member]
|
|
| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | |
| Carrying value of inventory | 167.6 |
| Fair value of inventory | 74.1 |
| Total impairments charges | $ 93.5 |