|
Note 12 - Contingencies and Commitments (Detail) (USD $)
In Millions, unless otherwise specified |
0 Months Ended | 3 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 3 Months Ended | 11 Months Ended | 0 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Nov. 19, 2011
|
Nov. 30, 2011
|
Aug. 31, 2011
|
May 17, 2010
Maximum [Member]
|
Nov. 30, 2011
Unpaid Contract [Member]
F&M [Member]
|
Nov. 30, 2011
EPC [Member]
|
Nov. 30, 2011
Performance Letters of Credit [Member]
|
Nov. 30, 2011
Xcel Energy [Member]
|
Nov. 30, 2011
F&M [Member]
|
Jun. 30, 2011
F&M [Member]
|
Nov. 30, 2011
Power [Member]
|
Jun. 24, 2011
Power [Member]
|
Mar. 07, 2011
Power [Member]
|
Jan. 14, 2011
Power [Member]
|
Nov. 30, 2011
Five Clients [Member]
|
Nov. 30, 2011
Single Client [Member]
|
Nov. 30, 2011
E&I [Member]
|
Aug. 31, 2011
E&I [Member]
|
Nov. 30, 2011
Additional Costs [Member]
F&M [Member]
|
Nov. 30, 2011
Total [Member]
F&M [Member]
|
Jul. 11, 2011
Minimum [Member]
|
Nov. 30, 2011
Minimum [Member]
Power [Member]
|
|
| Loss Contingency, Loss in Period | $ 63.4 | |||||||||||||||||||||
| Loss Contingency, Settlement Agreement, Consideration | $40 | |||||||||||||||||||||
| Gain Contingency, Unrecorded Amount | 48.2 | 3.8 | 32.0 | 165.0 | 233.0 | 200.0 | 143.0 | 8.3 | 52.0 | |||||||||||||
| Line of Credit Facility, Increase, Additional Borrowings | 19.0 | |||||||||||||||||||||
| Gain Contingency, Description | $19.0 | $4.5 | ||||||||||||||||||||
| Loss Contingency, Damages Sought, Value | 32.6 | 85.3 | 48.9 | 38.4 | ||||||||||||||||||
| Supply Commitment, Remaining Minimum Amount Committed | 28.1 | |||||||||||||||||||||
| Loss Contingency, Actions Taken by Plaintiff | $107.0 | |||||||||||||||||||||
| Litigation Settlement, Gross | 16.8 | |||||||||||||||||||||
| Increase (Decrease) in Accounts Receivable | 68.0 | |||||||||||||||||||||
| Letters of Credit Outstanding, Amount | 431.8 | 456.1 | 181.2 | |||||||||||||||||||
| Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments | 282.9 | |||||||||||||||||||||
| Concentration Risk, Credit Risk | $223.3 | |||||||||||||||||||||
| Fair Value, Concentration of Risk, Commitments | 60.0 | |||||||||||||||||||||
| Site Contingency, Accrual, Undiscounted Amount | $ 1.8 | $ 1.9 | ||||||||||||||||||||