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Commitments and Contingencies (Echelon) (Details) (USD $)
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12 Months Ended | 12 Months Ended | 0 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
LVE
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Dec. 31, 2012
LVE
Energy Sales Agreement
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Mar. 31, 2011
LVE
Energy Sales Agreement
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Dec. 31, 2012
LVE
Clark County Fees
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Dec. 31, 2012
Maximum
LVE
Energy Sales Agreement
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Jan. 27, 2013
Subsequent Event
LVE
Energy Sales Agreement
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Dec. 31, 2012
Echelon Development
acre
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Dec. 31, 2011
Echelon Development
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Mar. 01, 2013
Echelon Development
Subsequent Event
acre
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Dec. 31, 2010
State of Nevada Department of Taxation
Reduction in State Use Taxes
Echelon Development
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Dec. 31, 2010
Accrual of State Use Taxes
State of Nevada Department of Taxation
Echelon Development
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| Long-term Purchase Commitment [Line Items] | |||||||||||
| Assets held for development | $ 1,325,631,000 | $ 1,089,819,000 | |||||||||
| Impairment | 993,861,000 | 0 | |||||||||
| Annual ESA periodic fee, through November 2013 | 11,900,000 | ||||||||||
| ESA periodic fee, annual maintenance fee | 600,000 | ||||||||||
| Letter of credit securing Echelon's commitment to pay periodic fee agreement | 6,000,000 | ||||||||||
| ESA purchase option, price under Amended Purchase Option Agreement | 187,000,000 | ||||||||||
| Annual purchase commitments | 5,200,000 | ||||||||||
| Amount remaining | 3,900,000 | ||||||||||
| Sale of real estate development, consideration received, gross | 350,000,000 | ||||||||||
| Acres of land | 87 | 87 | |||||||||
| Sale of real estate development, consideration received, net of consideration transferred to VIE | 163,800,000 | ||||||||||
| Sale of real estate development, consideration received, net of consideration transferred to VIE and transaction costs | 157,000,000 | ||||||||||
| Loss contingency, portion not accrued | $ 5,000,000 | ||||||||||
| Reduction in use tax rate due to LEED tax credits | 5.75% | ||||||||||
| Use tax rate for accrual of use taxes due to noncompliance with LEED tax credits | 6.00% | ||||||||||