SEGMENT INFORMATION

Information About Profit and Assets

We evaluate performance and allocate resources based on the operating income of each operating segment. The operating income of each operating segment includes the revenues of the segment less expenses that are directly related to those revenues. Operating overhead, shared costs and certain compensation costs are included in Corporate in the following table. Interest and other income, interest and other expense and provision for income taxes are not allocated to the individual segments. We do not evaluate the performance of or allocate resources to our operating segments using asset data. The accounting policies of the reportable operating segments are the same as those described in the Summary of Significant Accounting Policies in "Note 1 - Basis of Presentation and Summary of Significant Accounting Policies."

Information on segments and reconciliations to consolidated revenues and consolidated operating income are as follows for the periods presented:



	Year Ended December 31,			Seven Months Ended December 31,			Year Ended May 31,
	2017			2016			2016			2015

	(in thousands)
Revenues ⁽¹⁾:
North America	$	2,929,522		$	1,650,616		$	2,052,623		$	1,968,890
Europe	767,524			403,823			631,900			615,966
Asia-Pacific	278,117			148,457			213,627			188,862
Consolidated revenues	$	3,975,163		$	2,202,896		$	2,898,150		$	2,773,718

Operating income (loss) ⁽¹⁾:
North America	$	457,009		$	233,850		$	307,626		$	293,139
Europe	272,769			145,767			244,837			240,014
Asia-Pacific	81,273			37,530			50,743			39,697
Corporate⁽²⁾	(252,183		)	(179,196		)	(178,262		)	(116,253		)
Consolidated operating income	$	558,868		$	237,951		$	424,944		$	456,597

Depreciation and amortization ⁽¹⁾:
North America	$	379,953		$	208,198		$	128,618		$	81,051
Europe	46,928			26,178			40,194			39,910
Asia-Pacific	16,466			10,385			13,935			9,973
Corporate	7,804			2,810			5,134			6,571
Consolidated depreciation and amortization	$	451,151		$	247,571		$	187,881		$	137,505

⁽¹⁾Revenues, operating income and depreciation and amortization reflect the effect of acquired businesses from the respective dates of acquisition. For further discussion, see "Note 2—Acquisitions."

⁽²⁾During the year ended December 31, 2017, the seven months ended December 31, 2016 and the year ended May 31, 2016, operating loss for Corporate included acquisition and integration expenses of $94.6 million, $91.6 million and $51.3 million, respectively.

Enterprise-Wide Information

As a percentage of our total consolidated revenues, revenues from external customers in the United States and the United Kingdom were 66% and 11%, respectively, for the year ended December 31, 2017. Revenues from external customers in the United States and the United Kingdom were 67% and 10%, respectively, for the 2016 transition period. Revenues from external customers in the United States, the United Kingdom, and Canada were 61%, 10% and 10%, respectively, for the year ended May 31, 2016; and 60%, 13% and 11%, respectively, for the year ended May 31, 2015. Revenues from external customers are attributed to individual countries based on the location of the customer arrangements. Our results of operations and our financial condition are not significantly reliant upon any single customer.

Long-lived assets, excluding goodwill and other intangible assets, by location as of December 31, 2017 and 2016 were as follows:



	2017		2016

	(in thousands)
United States	$	451,436	$	413,499
Foreign countries	136,912		112,871
	$	588,348	$	526,370