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Debt (Term Loans Under The Senior Credit Agreement) (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended |  | 0 Months Ended | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 | Feb. 07, 2014 2011 Term Loan [Member] | Sep. 30, 2014 2011 Term Loan [Member] | Dec. 31, 2013 2011 Term Loan [Member] | Sep. 30, 2014 2012-1 Term Loan [Member] | Dec. 31, 2013 2012-1 Term Loan [Member] | Sep. 30, 2014 2012-1 Term Loan [Member] First Eight Quarters [Member] | Sep. 30, 2014 2012-1 Term Loan [Member] Next Four Quarters [Member] | Sep. 30, 2014 2012-1 Term Loan [Member] Each Quarter Thereafter [Member] | Feb. 07, 2014 2012-2 Term Loan [Member] | Sep. 30, 2014 2012-2 Term Loan [Member] | Sep. 30, 2014 2012-2 Term Loan [Member] | Dec. 31, 2013 2012-2 Term Loan [Member] | Feb. 07, 2014 2014 Term Loan [Member] | Sep. 30, 2014 2014 Term Loan [Member] | Dec. 31, 2013 2014 Term Loan [Member] | Feb. 07, 2014 Revolving Credit Facility [Member] | Sep. 30, 2014 Revolving Credit Facility [Member] | Sep. 30, 2014 Revolving Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Feb. 07, 2014 Base Rate [Member] 2014 Term Loan [Member] | Feb. 07, 2014 Eurodollar [Member] 2014 Term Loan [Member] | Sep. 30, 2014 Minimum [Member] | Sep. 30, 2014 Minimum [Member] Base Rate [Member] | Sep. 30, 2014 Minimum [Member] Base Rate [Member] 2012-1 Term Loan [Member] | Sep. 30, 2014 Minimum [Member] Eurodollar [Member] | Sep. 30, 2014 Minimum [Member] Eurodollar [Member] 2012-1 Term Loan [Member] | Sep. 30, 2014 Maximum [Member] | Sep. 30, 2014 Maximum [Member] Base Rate [Member] | Sep. 30, 2014 Maximum [Member] Base Rate [Member] 2012-1 Term Loan [Member] | Sep. 30, 2014 Maximum [Member] Eurodollar [Member] | Sep. 30, 2014 Maximum [Member] Eurodollar [Member] 2012-1 Term Loan [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  |  |  |  | Jun. 30, 2018 |  | May 09, 2017 |  |  |  |  |  |  | Sep. 28, 2019 |  | Mar. 24, 2021 | Mar. 24, 2021 |  |  |  | May 09, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.50% | 2.50% | 1.875% | 0.875% | 1.00% | 1.875% | 2.00% | 2.375% | 1.375% | 1.50% | 2.375% | 2.50%
Base rate floor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |
Eurodollar rate floor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.75% |  |  |  |  |  |  |  |  |  |
Term Loan, percentage of par value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Coupon rate of notes |  |  |  |  |  |  |  |  | 2.66% |  |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing fees |  |  |  |  |  |  |  |  | 2,700,000 |  |  |  |  |  |  |  |  | 12,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly payments |  |  |  |  |  |  |  |  |  |  | 2,500,000 | 3,750,000 | 5,000,000 |  |  |  |  |  | 3,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of term loans |  |  | 303,000,000 | 509,500,000 |  | 180,500,000 |  |  | 8,800,000 |  |  |  |  | 110,000,000 | 3,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortized deferred financing fees | 4,599,000 | 3,981,000 | 13,114,000 | 11,508,000 |  | 1,100,000 |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write off of discount related to debt |  |  |  |  |  | 300,000 |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate debt | 7,550,088,000 |  | 7,550,088,000 |  | 5,876,607,000 |  |  | 180,234,000 | 176,250,000 | 185,000,000 |  |  |  |  |  |  | 109,745,000 |  | 1,492,778,000 |  |  | 300,000,000 | 300,000,000 | 215,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Repayments of revolving credit facility |  |  | $ 490,000,000 | $ 225,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 390,000,000 | $ 100,000,000 | $ 490,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 + Details
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- Definition Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 8 -Article 9 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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