Summary of Significant Accounting Policies - Accounts Receivable, Doubtful Accounts, Goodwill, Intangible and Long-Lived Assets (Details) - USD ($) $ in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
---|---|---|
Property, Plant and Equipment [Line Items] | ||
Allowance for doubtful accounts receivable | $ 15.1 | $ 22.2 |
Accrued compensation and benefits | 118.7 | 130.8 |
Marketing expenses | 63.2 | $ 60.1 |
Accounts Receivable Agreement 1 | ||
Property, Plant and Equipment [Line Items] | ||
Maximum amount available to be sold under agreement | 140.0 | |
Accounts Receivable Agreement 2 | ||
Property, Plant and Equipment [Line Items] | ||
Maximum amount available to be sold under agreement | $ 50.0 |