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

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-Publisher FASB
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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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-Publisher FASB
-Name Accounting Standards Codification
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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Name Accounting Standards Codification
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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Long-Term Debt Interest Rates (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
	Feb. 01, 2015	Feb. 28, 2015	Jan. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 08, 2014	Nov. 24, 2014	Dec. 10, 2010	Jan. 20, 2005
Debt Instrument [Line Items]
Repayments of long-term debt				$ 2,626,241	$ 6,017	$ 135,733
1.875% Senior Notes
Debt Instrument [Line Items]
Unamortized discount				$ 5,109	$ 6,605
Debt instrument, interest rate				1.875%	1.875%		1.875%
3.00% Senior Notes
Debt Instrument [Line Items]
Unamortized discount				$ 244	$ 306
Debt instrument, interest rate				3.00%	3.00%			3.00%
4.15% Senior Notes
Debt Instrument [Line Items]
Unamortized discount				$ 1,294	$ 1,439
Debt instrument, interest rate				4.15%	4.15%			4.15%
4.50% Senior Notes
Debt Instrument [Line Items]
Unamortized discount				$ 1,557	$ 1,871
Debt instrument, interest rate				4.50%	4.50%				4.50%
5.10% Senior Notes
Debt Instrument [Line Items]
Unamortized discount					$ 3
Debt instrument, interest rate					5.10%					5.10%
Repayments of long-term debt	$ 325,000
5.45% Senior Notes
Debt Instrument [Line Items]
Unamortized discount				$ 995	$ 1,029
Debt instrument, interest rate				5.45%	5.45%			5.45%
Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of long-term debt		$ 250,000
Short-term Debt \| Term Loan
Debt Instrument [Line Items]
Repayments of long-term debt		$ 183,500	$ 816,500
Senior Unsecured Cash Bridge Facility \| Bridge Loan
Debt Instrument [Line Items]
Repayments of long-term debt			$ 800,000
Domestic Financial Institution Agreement
Debt Instrument [Line Items]
Long-term Line of Credit				$ 0	$ 0
Foreign Credit Line U S Dollar Euro Denominated Borrowings
Debt Instrument [Line Items]
Long-term Line of Credit				0	0
Other Foreign Credit Lines
Debt Instrument [Line Items]
Long-term Line of Credit				$ 0	$ 0