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Face (par) amount of debt instrument at time of issuance.

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-SubTopic 30

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Debt (Details Textual) (USD $)	12 Months Ended
Debt (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 04, 2012 1.35% Senior notes due 2017 [Member]	Dec. 04, 2012 4.00% Senior notes due 2042 [Member]
Additional Debt (Textual) [Abstract]
Maturities of long-term debt 2014	$ 502,991,000
Maturities of long-term debt 2015	355,000
Maturities of long-term debt 2016	217,000
Maturities of long-term debt 2017	700,150,000
Maturities of long-term debt 2018	153,000
Interest expense on long-term debt	57,949,000	36,188,000	31,883,000
Debt (Textual) [Abstract]
Issue of debt securities				$ 700,000,000	$ 300,000,000
Debt instrument, interest rate				1.35%	4.00%