Other Financial Information - Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Financial Information [Abstract]
Production materials	$ 69.0	$ 60.6
Finished goods	25.2	21.4
Schedule Of Inventory [Line Items]
Inventory	94.2	82.0
Prepaid expenses and other current assets
Schedule Of Inventory [Line Items]
Inventory	90.6	80.6
Other long-term assets
Schedule Of Inventory [Line Items]
Inventory	$ 3.6	$ 1.4

Other financial information.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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