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Fair Value Measurements (Carrying Values And Fair Values Of Assets and Liabilities Not Required to be Carried at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions | Sep. 30, 2018 | Apr. 15, 2018 | Mar. 31, 2018
--- | --- | --- | ---
Senior Notes | 5.875% Senior Notes |  |  |  |
Fair Value, Carrying Values and Fair Values of Assets and Liabilities Not Required to be Carried at Fair Value on a Recurring Basis [Line Items] |  |  |  |
Coupon rate |  | 5.875% |  |
Convertible Senior Subordinated Notes | April 2013 Notes |  |  |  |
Fair Value, Carrying Values and Fair Values of Assets and Liabilities Not Required to be Carried at Fair Value on a Recurring Basis [Line Items] |  |  |  |
Coupon rate |  | 1.25% | 1.25% |
Carrying Value |  |  |  |
Assets: |  |  |  |
Investment in Pop's mandatorily redeemable preferred stock units(1) |  | $ 95.3 |  | $ 91.3
Liabilities: |  |  |  |
Total liabilities, fair value disclosure |  | 2,775.1 |  | 2,872.0
Carrying Value | Term Loan | Term Loan A Facility |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure |  | 731.6 |  | 729.7
Carrying Value | Term Loan | Term Loan B Facility |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure |  | 1,224.3 |  | 1,229.3
Carrying Value | Senior Notes | 5.875% Senior Notes |  |  |  |
Liabilities: |  |  |  |
Senior Notes, fair value disclosure |  | 501.6 |  | 500.4
Carrying Value | Convertible Senior Subordinated Notes | April 2013 Notes |  |  |  |
Liabilities: |  |  |  |
Convertible notes, fair value disclosures |  | 0.0 |  | 60.0
Carrying Value | Production Loans | Production Loans |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure |  | 317.6 |  | 352.6
Fair Value | Fair Value (Level 3) |  |  |  |
Assets: |  |  |  |
Investment in Pop's mandatorily redeemable preferred stock units(1) | [1] | 125.0 |  | 125.0
Fair Value | Fair Value (Level 2) |  |  |  |
Liabilities: |  |  |  |
Total liabilities, fair value disclosure | [2] | 2,852.7 |  | 2,955.2
Fair Value | Fair Value (Level 2) | Term Loan | Term Loan A Facility |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure | [2] | 747.2 |  | 750.9
Fair Value | Fair Value (Level 2) | Term Loan | Term Loan B Facility |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure | [2] | 1,253.1 |  | 1,251.6
Fair Value | Fair Value (Level 2) | Senior Notes | 5.875% Senior Notes |  |  |  |
Liabilities: |  |  |  |
Senior Notes, fair value disclosure | [2] | 534.3 |  | 539.5
Fair Value | Fair Value (Level 2) | Convertible Senior Subordinated Notes | April 2013 Notes |  |  |  |
Liabilities: |  |  |  |
Convertible notes, fair value disclosures | [2] | 0.0 |  | 60.3
Fair Value | Fair Value (Level 2) | Production Loans | Production Loans |  |  |  |
Liabilities: |  |  |  |
Loans, fair value disclosure | [2] | $ 318.1 |  | $ 352.9
[1] | The Company measures the fair value of its investment in Pop's mandatorily redeemable preferred stock units using primarily a discounted cash flow analysis based on the expected cash flows of the investment (a Level 3 measurement). The analysis reflects the contractual terms of the investment, including the period to maturity, and uses a discount rate commensurate with the risk associated with the investment.
[2] | The Company measures the fair value of its outstanding debt using discounted cash flow techniques that use observable market inputs, such as LIBOR-based yield curves, swap rates, and credit ratings (Level 2 measurements).

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