We recognize revenue over time for those agreements that are subject to terms similar, or equal to, the Federal Acquisition Regulation Part 52.249-2, which contains a termination for convenience clause, and where the products being produced have no alternative use. Prior to the adoption date, revenue related to these agreements was recognized when the goods were shipped, however, as a result of the adoption of ASC 606 a portion of our revenue may be earned in periods earlier than it would have been in prior years. The cumulative adjustment to retained earnings upon adoption represents those earnings, which would have been recognized in the previous year had ASC 606 been in effect during that time. As our production cycle is typically six months or less, it is expected that goods related to the revenue represented in that adjustment will be shipped and billed within the next twelve months. Less than half of our agreements contain provisions which would require revenue to be recognized over time.

We disaggregate our revenue based on market for analytical purposes. The following table details our revenue by market for the years ended December 31, 2019 and 2018:

(In millions)	2019		2018
Consolidated Net Sales	$	2,355.7	$	2,189.1
Commercial Aerospace		1,597.7		1,525.0
Space & Defense		444.7		369.9
Industrial		313.3		294.2

Revenue recognized over time gives rise to contract assets, which represent revenue recognized but unbilled. Contract assets are included in our consolidated balance sheets as a component of current assets. The activity related to contract assets is as follows:

	Composite			Engineered
(In millions)	Materials			Products		Total
Opening adjustment - January 1, 2018	$	15.1		$	23.0	$	38.1
Net revenue billed		(2.2	)		14.6		12.4
Balance at December 31, 2018	$	12.9		$	37.6	$	50.5
Net revenue billed		(0.1	)		2.3		2.2
Balance at December 31, 2019	$	12.8		$	39.9	$	52.7

Contract assets as of December 31, 2019, will be billed and reclassified to accounts receivable during 2020. Accounts receivable, net includes amounts billed to customers where the right to payment is unconditional.

The financial results were not significantly impacted by the adoption of ASC 606. Under ASC 606 for the years ended December 31, 2019 and 2018 revenue was higher by $2.2 million and $12.4 million and gross margin was higher by $0.4 million and $0.3 million, respectively, than they would have been under ASC 605. There was not a material impact on earnings per share for the years ended December 31, 2019 or 2018. At December 31, 2019 and 2018 our inventory was $47.0 million and $45.8 million lower, respectively, as a result of ASC 606.