Revenue and Related Matters (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue by Reportable Segment

Our disaggregated revenue by reportable segment is presented in the tables below for the years indicated (in thousands).

By Primary Geographic Market (1), (2)

Year Ended December 31, 2019

Primary Geographic Market	Research		Conferences		Consulting		Total
United States and Canada	$	2,199,008	$	295,857	$	239,625	$	2,734,490
Europe, Middle East and Africa	751,267		122,591		122,146		996,004
Other International	424,273		58,421		32,133		514,827
Total revenues	$	3,374,548	$	476,869	$	393,904	$	4,245,321

Year Ended December 31, 2018

Primary Geographic Market	Research		Conferences		Consulting		Other		Total
United States and Canada	$	1,994,016	$	256,219	$	205,874	$	58,843	$	2,514,952
Europe, Middle East and Africa	737,129		105,909		119,258		38,194		1,000,490
Other International	374,619		48,333		28,535		8,525		460,012
Total revenues	$	3,105,764	$	410,461	$	353,667	$	105,562	$	3,975,454

Year Ended December 31, 2017

Primary Geographic Market	Research		Conferences		Consulting		Other		Total
United States and Canada	$	1,600,847	$	210,698	$	188,022	$	92,799	$	2,092,366
Europe, Middle East and Africa	597,943		86,567		111,792		59,119		855,421
Other International	272,490		40,638		27,847		22,732		363,707
Total revenues	$	2,471,280	$	337,903	$	327,661	$	174,650	$	3,311,494

(1) Revenue is reported based on where the sale is fulfilled.

(2)

During 2018, the Company divested all of the non-core businesses that comprised its Other segment and moved a small residual product from the Other segment into the Research business and, as a result, no operating activity has been recorded in the Other segment in 2019. Note 2 — Acquisitions and Divestitures provides additional information regarding the Company's 2018 divestitures.

Schedule of Disaggregation of Revenue

Year Ended December 31, 2019

Timing of Revenue Recognition	Research		Conferences		Consulting		Total
Transferred over time (2)	$	3,083,936	$	—	$	316,042	$	3,399,978
Transferred at a point in time (3)	290,612		476,869		77,862		845,343
Total revenues	$	3,374,548	$	476,869	$	393,904	$	4,245,321

Year Ended December 31, 2018

Timing of Revenue Recognition	Research		Conferences		Consulting		Other		Total
Transferred over time (2)	$	2,851,176	$	—	$	294,397	$	86,667	$	3,232,240
Transferred at a point in time (3)	254,588		410,461		59,270		18,895		743,214
Total revenues	$	3,105,764	$	410,461	$	353,667	$	105,562	$	3,975,454

Year Ended December 31, 2017

Timing of Revenue Recognition	Research		Conferences		Consulting		Other		Total
Transferred over time (2)	$	2,275,377	$	—	$	269,720	$	141,331	$	2,686,428
Transferred at a point in time (3)	195,903		337,903		57,941		33,319		625,066
Total revenues	$	2,471,280	$	337,903	$	327,661	$	174,650	$	3,311,494

(1) During 2018, the Company divested all of the non-core businesses that comprised its Other segment and moved a small residual product from the Other segment into the Research business and, as a result, no operating activity has been recorded in the Other segment in 2019. Note 2 — Acquisitions and Divestitures provides additional information regarding the Company's 2018 divestitures.

(2) Research revenues were recognized in connection with performance obligations that were satisfied over time using a time-elapsed output method to measure progress. Consulting revenues were recognized over time using labor hours as an input measurement basis. During 2018 and 2017, Other revenues were recognized using either a time-elapsed output method, performance-based milestone approach or labor hours, depending on the nature of the underlying customer contract.

(3)

The revenues in this category were recognized in connection with performance obligations that were satisfied at the point in time that the contractual deliverables were provided to the customer.

Schedule for Contract with Customer, Asset and Liability

The table below provides information regarding certain of the Company’s balance sheet accounts that pertain to its contracts with customers (in thousands).

	December 31,
	2019		2018
Assets:
Fees receivable, gross (1)	$	1,334,012	$	1,262,818
Contract assets recorded in Prepaid expenses and other current assets (2)	$	21,350	$	26,119
Contract liabilities:
Deferred revenues (current liability) (3)	$	1,928,020	$	1,745,244
Non-current deferred revenues recorded in Other liabilities (3)	24,409		21,194
Total contract liabilities	$	1,952,429	$	1,766,438

(1) Fees receivable represent an unconditional right of payment from our customers and include both billed and unbilled amounts.

(2) Contract assets represent recognized revenue for which we do not have an unconditional right to payment as of the balance sheet date because the project may be subject to a progress billing milestone or some other billing restriction.

(3)

Deferred revenues represent amounts (i) for which the Company has received an upfront customer payment or (ii) that pertain to recognized fees receivable. Both situations occur before the completion of our performance obligation(s).