Debt (Components Of Total Indebtedness) (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Dec. 31, 2013	Dec. 19, 2013
Debt Instrument [Line Items]
Other Long-term Debt	$ 23,756,000	$ 0
Total long-term debt, net	3,897,891,000	3,738,773,000
Current portion of long-term debt	402,245,000	414,929,000
Total long-term debt, less current portion, net	3,495,646,000	3,323,844,000
1.75% Convertible Senior Subordinated Notes Due 2015 [Member]
Debt Instrument [Line Items]
Convertible Note Gross	379,500,000	379,500,000
Unamortized discount	(27,772,000)	(34,079,000)
Net carrying amount of the debt component	351,728,000	345,421,000
Notes, interest rate	1.75%	1.75%
Debt instrument maturity year	2015
3.25% AMS Convertible Notes Due 2036 [Member]
Debt Instrument [Line Items]
Net carrying amount of the debt component	22,000	22,000
Notes, interest rate	3.25%
Debt instrument maturity year	2036
4.00% AMS Convertible Notes Due 2041 [Member]
Debt Instrument [Line Items]
Net carrying amount of the debt component	106,000	111,000
Notes, interest rate	4.00%
Debt instrument maturity year	2041
Term Loan A Facility Due 2019 [Member]
Debt Instrument [Line Items]
Face value of debt instrument	1,100,000,000	0
Debt instrument maturity year	2019
Term Loan B Facility Due 2021 [Member]
Debt Instrument [Line Items]
Face value of debt instrument	425,000,000	0
Debt instrument maturity year	2021
Term Loan A Facility Due 2018 [Member]
Debt Instrument [Line Items]
Face value of debt instrument	0	1,335,469,000
Debt instrument maturity year	2018
Term Loan B Facility Due 2018 [Member]
Debt Instrument [Line Items]
Face value of debt instrument	0	60,550,000
Debt instrument maturity year	6/17/2018
7.00% Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Senior notes, gross	500,000,000	500,000,000
Notes, interest rate	7.00%
Debt instrument maturity year	2019
7.00% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Senior notes, gross	400,000,000	400,000,000
Unamortized initial purchaser's discount	(2,721,000)	(2,800,000)
Senior notes	397,279,000	397,200,000
Notes, interest rate	7.00%
Debt instrument maturity year	2020
7.25% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior notes, gross	400,000,000	400,000,000
Notes, interest rate	7.25%
Debt instrument maturity year	2022
5.75% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior notes, gross	$ 700,000,000	$ 700,000,000	$ 700,000,000.0
Notes, interest rate	5.75%	5.75%	5.75%
Debt instrument maturity year	2022

Convertible note gross.

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- Definition

Debt instrument maturity year.

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No definition available.

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Unamortized initial Purchaser's discount and debt issuance costs.

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No definition available.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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

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- Definition

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

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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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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.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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