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Financing Arrangements and Derivative Financial Instruments - Amended and Restated Second Lien Term Loan Facility due 2019 (Details) | 1 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Sep. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items] |  |  |
Long-term debt, before deferred financing fees |  | $ 6,118,000,000 | $ 5,235,000,000
Line of Credit | $2.0 billion first lien revolving credit facility due 2021 |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity |  | 2,000,000,000.0 |
Line of Credit | Secured Debt | Second Lien Term Loan Facility due 2019 |  |  |
Line of Credit Facility [Line Items] |  |  |
Total leverage ratio required to reduce basis, maximum | 1.25 |  |
Debt instrument, optional reduction of basis spreads on variable rates | 0.25% |  |
Long-term debt, before deferred financing fees |  | $ 399,000,000 | $ 399,000,000
Line of Credit | Secured Debt | Second Lien Term Loan Facility due 2019 | LIBOR |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.00% |  |
Debt instrument, basis spread on reference rate | 1.00% |  |
Line of Credit | Secured Debt | Second Lien Term Loan Facility due 2019 | Alternative Base Rate |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.00% |  |
Line of Credit | Secured Debt | Second Lien Term Loan Facility due 2019 | Federal Funds Rate |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, basis spread on reference rate | 0.50% |  |

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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 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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