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Debt - Credit Facilities (Details) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) extension_option | Jun. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |
Debt, gross | $ 2,382,871,000 |  | $ 2,981,062,000
Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding borrowings against the revolving credit facility | 0 |  | 0
Line of Credit | Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Credit facility amount, maximum | $ 800,000,000 | $ 800,000,000 |
Number of extension options | extension_option | 2 |  |
Debt instrument extension period (up to) | 6 months |  |
Outstanding borrowings against the revolving credit facility | $ 0 |  | 0
Debt, gross | $ 0 |  | 0
Line of Credit | Revolving Credit Facility | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 1.20% |  |
Line of Credit | Revolving Credit Facility | LIBOR | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.825% |  |
Line of Credit | Revolving Credit Facility | LIBOR | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 1.55% |  |
Line of Credit | Revolving Credit Facility | Base Rate | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.00% |  |
Line of Credit | Revolving Credit Facility | Base Rate | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.55% |  |
Credit Agreement |  |  |
Debt Instrument [Line Items] |  |  |
Total credit agreement amount |  |  | 1,000,000,000
Credit agreement accordion feature | $ 1,750,000,000 |  |
Term Loan facility |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding borrowings against the revolving credit facility | 197,913,000 |  | 321,735,000
Term Loan facility | Line of Credit |  |  |
Debt Instrument [Line Items] |  |  |
Credit facility amount, maximum | 200,000,000 | $ 200,000,000 |
Debt, gross | $ 200,000,000 |  | $ 325,000,000
Term Loan facility | Line of Credit | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 1.35% |  |
Term Loan facility | Line of Credit | LIBOR | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.90% |  |
Term Loan facility | Line of Credit | LIBOR | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 1.75% |  |
Term Loan facility | Line of Credit | Base Rate | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.00% |  |
Term Loan facility | Line of Credit | Base Rate | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.75% |  |

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- Definition Debt Instrument, Accordion Feature, Higher Borrowing Capacity Option + References No definition available. + Details
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- Definition Debt Instrument, Extension Period + References No definition available. + Details
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- Definition Represents the number of extension options for debt instrument. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: 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=64930785&loc=d3e28551-108399 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition 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. + References Reference 1: 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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