SEGMENT INFORMATION

We operate in three reportable segments: North America, Europe and Asia-Pacific. 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 our Annual Report on Form 10-K for the year ended December 31, 2017 and our 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 was as follows for the three and six months ended June 30, 2018 and June 30, 2017:



	Three Months Ended						Six Months Ended
	June 30, 2018			June 30, 2017			June 30, 2018			June 30, 2017

	(in thousands)

Revenues^{(1) (2)}:
North America	$	621,801		$	710,965		$	1,215,830		$	1,398,009
Europe	155,631			186,506			298,908			352,054
Asia-Pacific	55,732			64,769			113,403			131,939
Consolidated revenues	$	833,164		$	962,240		$	1,628,141		$	1,882,002

Operating income (loss)⁽²⁾:
North America	$	147,184		$	112,176		$	272,588		$	206,259
Europe	82,682			65,673			153,230			120,180
Asia-Pacific	19,577			17,535			43,351			37,289
Corporate⁽³⁾	(58,706		)	(63,532		)	(122,262		)	(126,906		)
Consolidated operating income	$	190,737		$	131,852		$	346,907		$	236,822

Depreciation and amortization⁽²⁾:
North America	$	105,433		$	89,455		$	207,958		$	182,163
Europe	11,775			11,487			24,520			23,063
Asia-Pacific	4,726			4,308			9,359			7,584
Corporate	1,714			2,030			3,555			3,504
Consolidated depreciation and amortization	$	123,648		$	107,280		$	245,392		$	216,314

⁽¹⁾As more fully described in "Note 1—Basis of Presentation and Summary of Significant Accounting Policies" and "Note 3—Revenues," we adopted a new revenue accounting standard on January 1, 2018 that results in revenue being presented net of certain fees that we pay to third parties. This change in presentation affected our reported revenues and operating expenses during the three and six months ended June 30, 2018 by the same amount and had no effect on operating income.

⁽²⁾ 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."

⁽³⁾ During the three and six months ended June 30, 2018, operating loss for Corporate included acquisition and integration expenses of $8.1 million and $26.4 million, respectively. During the three and six months ended June 30, 2017, operating loss for Corporate included acquisition and integration expenses of $21.9 million and $48.0 million, respectively.