Other Assets and Liabilities - Other Accrued and Current Liabilities (Details) - USD ($) $ in Millions	Jul. 06, 2020	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Restructuring accruals		$ 7.1	$ 11.1
Operating expenses accruals		57.4	58.7
Accrued interest expense		47.5	49.3
Short term lease liability		23.3	22.4
Other accrued liabilities		56.2	25.8
Total		$ 191.5	$ 167.3
New Senior Unsecured Notes \| Unsecured Debt \| Subsequent Event
Debt Instrument [Line Items]
Proportion of redemption of debt instrument (as a percent)	40.00%

Liabilities related to operating expenses, such as rent, telephone, advertising, due within one year.

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Amount of liabilities incurred to vendors for goods and services received, and accrued liabilities classified as other, payable within one year or the normal operating cycle, if longer.

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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.

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Percentage of principal amount of debt redeemed.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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