Revenue Recognition (Cumulative Effect on Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables, Net, Current	$ 472.7	$ 514.8	$ 506.5
Accounts Payable, Current	433.3	357.9	348.6
Retained Earnings (Accumulated Deficit)	1,855.0	1,574.9	$ 1,575.9
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables, Net, Current	465.9
Accounts Payable, Current	424.9
Retained Earnings (Accumulated Deficit)	1,856.6
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables, Net, Current	6.8	8.3
Accounts Payable, Current	8.4	9.3
Retained Earnings (Accumulated Deficit)	$ (1.6)	$ (1.0)

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. 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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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

+ References

No definition available.

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