XML 34 R67.htm IDEA: XBRL DOCUMENT

Fair Value Measurements - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Financial Instruments [Line Items]
Estimated fair value of long-term debt, including the current portion	$ 1,630,000	$ 1,630,000	$ 1,230,000
Carrying amount of long-term debt	$ 1,550,000	$ 1,550,000	$ 1,200,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References+ Details