Revenue from Contracts with Customers - Contract Asset and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Contract liability increase (decrease), current	$ (17.9)	$ 10.7	$ 14.8
Receivables, net, current	815.4	966.5
Deferred revenue, current	18.9	44.3
Deferred revenue, noncurrent	83.7	77.6
Increase (decrease) in receivables	(151.1)
Contract with customer, liability, revenue recognized	48.6	$ 47.9
Other Current Liabilities [Member]
Contract liability increase (decrease), current	(25.4)
Other Noncurrent Liabilities [Member]
Contract liability increase (decrease), current	$ 6.1

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as noncurrent.

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Amount of increase (decrease) in deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

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The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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