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Revenue from Contracts with Customers Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset, Net	$ 12.8	$ 4.0
Contract with Customer, Liability	61.0	$ 77.4
Contract with Customer, Asset, Increase (Decrease) for Contract Acquired in Business Combination	8.4
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	5.3
Revenue from Contract with Customer, Excluding Assessed Tax	2.3
Contract with Customer, Liability, Increase from Cash Receipts	34.3
Contract with Customer, Liability, Revenue Recognized, Included In Beginning Balance	(40.2)
Contract with Customer, Liability, Revenue Recognized, Added During Period	(15.8)
Contract with Customer, Asset, Reclassified to Receivable	$ (1.9)

X

- Definition

Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, from business combination.

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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- Definition

Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due, from business combination.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Contract with Customer, Liability, Increase from Cash Receipts

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Contract with Customer, Liability, Revenue Recognized, Included In Beginning Balance

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