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Contract Assets and Contract Liabilities (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Significant changes during the three and nine months ended September 30, 2019 and 2018 in the above contract asset and liability balances were as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Revenue recognized that was included in deferred revenue at December 31, 2018	$	46.0			$	236.6
Revenue recognized that was included in deferred revenue at December 31, 2017			$	64.6			$	255.5

Net contract assets (liabilities) as of September 30, 2019 and December 31, 2018 are as follows:



	September 30, 2019			December 31, 2018
Contract assets - current	$	38.3		$	29.7
Contract assets - long-term⁽ⁱ⁾	22.4			22.2
Deferred revenue - current	(236.0		)	(294.4		)
Deferred revenue - long-term	(142.4		)	(157.2		)



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