Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue By Source

In the following table, revenue is disaggregated by source of revenue (in millions):

	Year Ended December 31,
	2019		2018
Net operating fees	$	1,037.4	$	760.2
Incentive fees	56.2		38.3
Other	92.5		70.0
Net services revenue	$	1,186.1	$	868.5

Schedule of Assets and Liabilities

The following table provides information about receivables, contracts assets, and contract liabilities from contracts with customers (in millions):

	December 31, 2019		December 31, 2018
Receivables (1)	$	83.1	$	97.4
Contract assets (2)	2.0		1.2
Contract liabilities (2)	25.3		22.3

(1) Receivables are included in accounts receivable, net. The balance includes

accounts receivable, net - related party.

(2) Contract assets and contract liabilities are included in other current assets and customer liabilities, respectively. The contract liabilities balance contains related party amounts, including $4.2 million of current customer liabilities and $18.6 million of non-current customer liabilities.

ignificant changes in the contract assets and the contract liabilities balances during the year ended December 31, 2019 and 2018 are as follows (in millions):

	December 31, 2019				December 31, 2018
	Contract assets		Contract liabilities		Contract assets		Contract liabilities
Revenue recognized that was included in the contract liability balance at the beginning of the period	$	—	$	69.7	$	—	$	51.8
Increases due to cash received, excluding amounts recognized as revenue during the period	—		2.4		—		5.8
Acquisitions	—		—		1.2		2.1

Schedule of Transaction Price Allocated to the Remaining Performance Obligation

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period (in millions). The estimated revenue does not include amounts of variable consideration that are constrained.

	Net operating fees		Incentive fees
2020	$	63.3	$	18.0
2021	18.7		—
2022	9.2		—
2023	7.3		—
Thereafter	8.4		—
Total	$	106.9	$	18.0