Debt and Financing - Schedule of Debt and Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended | |
Mar. 31, 2019USD ($) | Mar. 31, 2018 | Dec. 31, 2018USD ($) |
Debt Instrument [Line Items] | | | |
Par Value | $ 884.5 | | |
Discount | (7.3) | | |
Debt Issuance Costs | (6.7) | | |
Book Value | 870.5 | | |
Book Value, Current Maturities | (23.6) | | $ (20.7) |
Par Value, Excluding Current Maturities | 860.9 | | |
Premium (Discount) | (7.3) | | |
Book Value, Excluding Current Maturities | 846.9 | | 854.2 |
Book Value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | 870.5 | | 874.9 |
Fair value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | 877.4 | | 850.7 |
2014 ABL Facility Credit Agreement | | | |
Debt Instrument [Line Items] | | | |
Total cash and cash equivalents and Managed Accessibility | 155.7 | | 203.8 |
Managed Accessibility | 9.1 | | 1.2 |
Changes to restricted cash | 20 | | (25) |
Term Loan | | | |
Debt Instrument [Line Items] | | | |
Par Value | 573 | | |
Discount | (7.3) | | |
Debt Issuance Costs | (6) | | |
Book Value | 559.7 | | |
Par Value, Current Maturities | (18) | | |
Discount, Current Maturities | 0 | | |
Deferred Issuance Costs, Current | 0 | | |
Book Value, Current Maturities | $ (18) | | |
Average Effective Interest Rate | 11.60% | | |
Term Loan | Book Value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | $ 559.7 | | 559.4 |
Term Loan | Fair value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | 569.5 | | 546 |
ABL Facility | 2014 ABL Facility Credit Agreement | | | |
Debt Instrument [Line Items] | | | |
Par Value | 0 | | |
Discount | 0 | | |
Debt Issuance Costs | 0 | | |
Book Value | 0 | | |
Line of credit facility, total cash and availability | 48.1 | | |
Secured Second A&R CDA | | | |
Debt Instrument [Line Items] | | | |
Par Value | 26.8 | | |
Discount | 0 | | |
Debt Issuance Costs | (0.1) | | |
Book Value | $ 26.7 | | |
Average Effective Interest Rate | 8.00% | | |
Unsecured Second A&R CDA | | | |
Debt Instrument [Line Items] | | | |
Par Value | $ 46.7 | | |
Discount | 0 | | |
Debt Issuance Costs | (0.2) | | |
Book Value | 46.5 | | |
Par Value, Current Maturities | (1.5) | | |
Discount, Current Maturities | 0 | | |
Deferred Issuance Costs, Current | 0 | | |
Book Value, Current Maturities | $ (1.5) | | |
Average Effective Interest Rate | 8.00% | | |
Lease financing obligations | | | |
Debt Instrument [Line Items] | | | |
Par Value | $ 238 | | |
Discount | 0 | | |
Debt Issuance Costs | (0.4) | | |
Book Value | 237.6 | | |
Par Value, Current Maturities | (4.1) | | |
Discount, Current Maturities | 0 | | |
Deferred Issuance Costs, Current | 0 | | |
Book Value, Current Maturities | $ (4.1) | | |
Average Effective Interest Rate | 15.10% | | |
Lease financing obligations | Book Value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | $ 237.6 | | 242.2 |
Lease financing obligations | Fair value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | 234.9 | | 234.7 |
Other Debt Obligations | Book Value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | 73.2 | | 73.3 |
Other Debt Obligations | Fair value | | | |
Debt Instrument [Line Items] | | | |
Long-term debt, fair value | $ 73 | | $ 70 |
Term Loan Agreement | | | |
Debt Instrument [Line Items] | | | |
Maximum Total Leverage Ratio, March 31, 2019 | 3.25 | | |
Maximum Total Leverage Ratio, June 30, 2019 | 3.25 | | |
Maximum Total Leverage Ratio, September 30, 2019 | 3.25 | | |
Maximum Total Leverage Ratio, December 31, 2019 | 3 | | |
Maximum Total Leverage Ratio, March 31, 2020 | 3 | | |
Maximum Total Leverage Ratio, June 30, 2020 | 3 | | |
Maximum Total Leverage Ratio, September 30, 2020 | 2.75 | | |
Maximum Total Leverage Ratio, December 31, 2020 | 2.75 | | |
Maximum Total Leverage Ratio, March 31, 2021 | 2.75 | | |
Maximum Total Leverage Ratio, June 30, 2021 and thereafter | 2.50 | | |
Total leverage ratio | | 2.76 | |
London Interbank Offered Rate (LIBOR) | Term Loan | | | |
Debt Instrument [Line Items] | | | |
Floor interest rate | 1.00% | | |
Basis spread on variable rate | 8.50% | | |