|
Inventories (Details) (Work-in-process inventories, USD $)
In Millions, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
|
Work-in-process inventories
|
||
| Inventory [Line Items] | ||
| Costs and estimated earnings in excess of billings on uncompleted contracts | $ 122.9 | $ 127.9 |
| Excess over average costs on long-term contracts | $ 343.4 | $ 320.6 |