XML 46 R53.htm IDEA: XBRL DOCUMENT

Fair Value Disclosures - Additional Information (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 4,116,200,000	$ 3,529,000,000
Long term debt	$ 4,023,937,000	$ 3,516,365,000

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References+ Details