Variable Interest Entities - Additional Information (Detail)
In Millions, unless otherwise specified |
1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2000
|
Dec. 31, 2013
USD ($)
|
Dec. 31, 2012
USD ($)
|
Dec. 31, 2011
USD ($)
|
Jun. 30, 2000
Limited Liability Company II [Member]
|
Jun. 30, 2000
Limited Liability Company [Member]
|
Jun. 30, 2000
Limited Liability Company [Member]
Limited Liability Company II [Member]
USD ($)
|
Dec. 31, 2013
Limited Liability Company [Member]
Limited Liability Company II [Member]
USD ($)
|
Dec. 31, 2012
Limited Liability Company [Member]
Limited Liability Company II [Member]
USD ($)
|
Apr. 30, 2010
Low-Income Housing Properties [Member]
USD ($)
|
Dec. 31, 2013
Low-Income Housing Properties [Member]
USD ($)
|
Dec. 31, 2012
Low-Income Housing Properties [Member]
USD ($)
|
Dec. 31, 2013
Investment in Recycling and Waste-to-Energy [Member]
USD ($)
|
Dec. 31, 2013
Investment in Recycling and Waste-to-Energy [Member]
GBP (£)
|
Mar. 31, 2012
Investment in Recycling and Waste-to-Energy [Member]
|
Dec. 31, 2013
Investment in Recycling and Waste-to-Energy [Member]
USD ($)
|
Dec. 31, 2013
Investment in Recycling and Waste-to-Energy [Member]
GBP (£)
|
Jan. 31, 2011
Investment in Refined Coal Facility [Member]
USD ($)
|
Dec. 31, 2013
Investment in Refined Coal Facility [Member]
USD ($)
|
Dec. 31, 2012
Investment in Refined Coal Facility [Member]
USD ($)
|
|
Business Acquisition [Line Items] | ||||||||||||||||||||
Percentage of ownership in LLC's | 0.25% | 0.50% | 50.00% | |||||||||||||||||
Percentage of variable interest entities owned by other companies | 99.75% | 99.50% | ||||||||||||||||||
Total initial investment by other companies | $ 167 | |||||||||||||||||||
Under the LLC agreements, the LLC shall be dissolved upon the occurrence of any of the following events | (i) a written decision of all members of the LLCs; (ii) December 31, 2063; (iii) a court's dissolution of the LLCs; or (iv) the LLCs ceasing to own any interest in the waste-to-energy facilities. | |||||||||||||||||||
Reporting entity percentage of interest in earnings of variable interest entity after achieving targeted returns | 80.00% | |||||||||||||||||||
Other companies percentage of interest in earnings of variable interest entity after achieving targeted returns | 20.00% | |||||||||||||||||||
Net property and equipment | 284 | 296 | ||||||||||||||||||
Noncontrolling interests | 295 | 321 | 239 | 245 | ||||||||||||||||
Expense recognized for other companies' noncontrolling interests in LLCs earnings | 43 | 45 | 50 | |||||||||||||||||
Expected cost to construct Waste-to-Energy LLC facility | 331 | 200 | 331 | 200 | ||||||||||||||||
Total commitment | 94 | 57 | 94 | 57 | ||||||||||||||||
Note receivables balance from the LLC | 18 | 11 | ||||||||||||||||||
Investment balance | 437 | 443 | 129 | 153 | 1 | 1 | 27 | 19 | ||||||||||||
Cash payments to acquire equity method investment | 6 | 48 | ||||||||||||||||||
Consideration for investment | 221 | |||||||||||||||||||
Value of notes payable included in consideration for investment | 215 | |||||||||||||||||||
Equity method investments debt balance | 128 | 152 | ||||||||||||||||||
Variable interest entities primary beneficiary trust fair value assets | 125 | 125 | ||||||||||||||||||
Carrying value of restricted trust funds and escrow accounts for which company is not the sole beneficiary specifically for future settlement of landfill and environmental remediation liabilities | $ 110 | $ 110 |