Revenue

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

The total amount of the transaction price for our revenue contracts allocated to performance obligations that are unsatisfied (or partially unsatisfied) as of June 30, 2021 is as follows:

	Remainder of 2021		2022		2023		2024		2025		Thereafter		Total
Future revenue	$	741.3	$	713.2	$	371.7	$	164.9	$	106.9	$	250.0	$	2,348.0

The table of future revenue does not include any amount of variable consideration that is a sales or usage-based royalty in exchange for distinct data licenses or that is allocated to a distinct service period within a single performance obligation that is a series of distinct service periods.

Timing of Revenue Recognition

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Revenue recognized at a point in time	$	212.5	$	173.8	$	417.5	$	352.6
Revenue recognized over time	308.4		244.9		607.9		461.8
Total revenue recognized	$	520.9	$	418.7	$	1,025.4	$	814.4

Contract Balances

	At June 30, 2021		At December 31, 2020
Accounts receivable, net	$	322.5	$	319.3
Short-term contract assets (1)	$	2.0	$	0.7
Long-term contract assets (2)	$	5.8	$	3.8
Short-term deferred revenue	$	592.3	$	477.2
Long-term deferred revenue (3)	$	13.8	$	14.6

(1) Included within Other Current Assets in the condensed consolidated balance sheet

(2) Included within Other Non-Current Assets in the condensed consolidated balance sheet

(3) Included within Other Non-Current Liabilities in the condensed consolidated balance sheet

The increase in deferred revenue of $114.3 million from December 31, 2020 to June 30, 2021 was primarily due to cash payments received or due in advance of satisfying our performance obligations, and the acquisition of Bisnode, largely offset by $352.0 million of revenue recognized that were included in the deferred revenue balance at December 31, 2020. See Note 14 for further discussion with regard to the acquisition of Bisnode.

The increase in contract assets of $3.3 million is primarily due to new contract assets recognized, net of new amounts reclassified to receivables during 2021, largely offset by $1.9 million of contract assets included in the balance at January 1, 2021 that were reclassified to receivables when they became unconditional.

See Note 16 for a schedule of disaggregation of revenue.

Assets Recognized for the Costs to Obtain a Contract

Commission assets, net of accumulated amortization included in deferred costs, were $93.6 million and $83.8 million as of June 30, 2021 and December 31, 2020, respectively.

The amortization of commission assets is as follows:

Period	Amortization
Three months ended June 30, 2021	$	6.6
Six months ended June 30, 2021	$	12.6
Three months ended June 30, 2020	$	4.0
Six months ended June 30, 2020	$	7.3