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Business Combinations, Separately Recognized Transactions Table (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Integration expenses	$ 3.7
Restructuring and acquisition-related costs	$ 12.1	$ 18.3

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- Definition

Costs incurred for restructuring initiatives as well as expenses directly related to acquisition activity.

+ References

No definition available.

+ Details

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

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