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Debt - 2014 Credit Agreement (Details) $ in Millions |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 29, 2016 USD ($) | Oct. 17, 2014 USD ($) | Dec. 31, 2017 USD ($) | Mar. 31, 2017 | Sep. 30, 2017 USD ($)
Secured letter of credit outside credit agreement |  |  |  |  |
Debt agreements |  |  |  |  |
Borrowing capacity | $ 500.0 |  |  |  |
2014 Credit Agreement |  |  |  |  |
Debt agreements |  |  |  |  |
Increase in borrowing capacity |  | $ 500.0 |  |  |
Maximum consolidated leverage ratio covenant | 5.00 |  |  | 4.75 |
Consolidated leverage ratio |  |  | 4.0 |  |
Consolidated interest coverage ratio |  |  | 4.7 |  |
2014 Credit Agreement | Term loan A |  |  |  |  |
Debt agreements |  |  |  |  |
Borrowing capacity |  | 1,925.0 |  |  |
Increase in borrowing capacity | $ 185.0 |  |  |  |
2014 Credit Agreement | Term loan B |  |  |  |  |
Debt agreements |  |  |  |  |
Borrowing capacity |  | 760.0 |  |  |
2014 Credit Agreement | Revolving credit facility |  |  |  |  |
Debt agreements |  |  |  |  |
Borrowing capacity |  | $ 1,050.0 |  |  |
Outstanding letters of credit |  |  | $ 54.8 |  | $ 58.1
Remaining borrowing capacity under credit facility |  |  | $ 915.2 |  | $ 991.9

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- Definition Amount of increase (decrease) of the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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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