XML 46 R47.htm IDEA: XBRL DOCUMENT

Fair value measurements Fair value disclosure (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Fair Value Disclosures [Abstract]
Long-term Debt, Fair Value	$ 1,951,000,000	$ 1,559,000,000
Long-term Debt	$ 1,926,064,000	$ 1,529,798,000

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