Schedule of Financial Performance by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information
Revenue	$ 3,100,303	$ 2,720,764
Segment EBITDA	319,893	295,216
Depreciation and amortization	76,207	61,066
North America
Segment Reporting Information
Revenue	1,302,309	1,329,843
Segment EBITDA	176,636	177,713
Depreciation and amortization	22,239	21,228
Europe
Segment Reporting Information
Revenue	1,445,541	1,040,430
Segment EBITDA	105,298	75,534
Depreciation and amortization	47,011	32,757
Specialty
Segment Reporting Information
Revenue	353,737	351,792
Segment EBITDA	37,959	41,969
Depreciation and amortization	6,957	7,081
Intersegment Eliminations [Member]
Segment Reporting Information
Revenue	(1,284)	(1,301)
Segment EBITDA	0	0
Depreciation and amortization	0	0
Third Party [Member]
Segment Reporting Information
Revenue	3,100,303	2,720,764
Third Party [Member] \| North America
Segment Reporting Information
Revenue	1,302,206	1,329,660
Third Party [Member] \| Europe
Segment Reporting Information
Revenue	1,445,541	1,040,430
Third Party [Member] \| Specialty
Segment Reporting Information
Revenue	352,556	350,674
Third Party [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information
Revenue	0	0
Intersegment [Member]
Segment Reporting Information
Revenue	0	0
Intersegment [Member] \| North America
Segment Reporting Information
Revenue	103	183
Intersegment [Member] \| Europe
Segment Reporting Information
Revenue	0	0
Intersegment [Member] \| Specialty
Segment Reporting Information
Revenue	1,181	1,118
Intersegment [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information
Revenue	$ (1,284)	$ (1,301)

Segment EBITDA includes revenue and expenses that are controllable by the segment. Corporate and administrative expenses are allocated to the segments based on usage, with shared expenses apportioned based on the segment's percentage of consolidated revenue. Segment EBITDA excludes restructuring and acquisition related expenses, depreciation, amortization, interest, change in fair value of contingent consideration liabilities, taxes and equity in earnings of unconsolidated subsidiaries. Loss on debt extinguishment is considered a component of interest in calculating EBITDA, as the write-off of debt issuance costs is similar to the treatment of debt issuance cost amortization.

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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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

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