Contract assets and deferred revenue (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Net Contract Assets (Liabilities)

Net contract assets (liabilities) are as follows:

As of December 31,	2020		2019
Contract assets - current	$	44.3	$	38.4
Contract assets - long-term(i)	20.7		21.6
Deferred revenue - current	(257.1)		(246.4)
Deferred revenue - long-term	(137.9)		(147.0)

(i)Reported in other long-term assets on the company’s consolidated balance sheets

Significant changes in the above contract asset and liability balances were as follows:

Year ended December 31,	2020		2019
Revenue recognized that was included in deferred revenue at the beginning of the period	$	236.1	$	270.1