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Acquisitions Of Businesses (Details) $ in Thousands						12 Months Ended
	May 03, 2018 Company	Apr. 04, 2018 Company	Nov. 01, 2017 Company	Mar. 01, 2017 Company	Jan. 04, 2017 Company	Dec. 31, 2017 USD ($)	Jun. 30, 2018 USD ($)
Business Acquisition [Line Items]
Goodwill						$ 964,893	$ 978,303
Number of businesses acquired | Company	1	1	1	1	1
2017 Acquisitions [Member]
Business Acquisition [Line Items]
Purchase price						109,300
Working capital acquired						9,600
Other net assets						2,300
Goodwill						40,800
Identifiable intangible assets						$ 56,600

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- Definition

The amount of acquisition cost of a business combination allocated to other net assets.

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The amount of acquisition cost of a business combination allocated to working capital.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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