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Contract Liabilities and Remaining Performance Obligations
 12 Months Ended
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]  
Contract Liabilities and Remaining Performance Obligations Contract Liabilities and Remaining Performance Obligations
The Company's contract liabilities consist of payments received from customers, or such consideration that is contractually due, in advance of providing the product or performing services. The Company's contract liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. As of December 31, 2018 and December 31, 2017, the contract liability balance was $178 million and $159 million, respectively. For the year ended December 31, 2018 and 2017, the Company recognized revenue of $123 million and $113 million, respectively, related to its contract liabilities.
A contract's transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. For more information regarding the Company's performance obligations, see Note 1 (Description of Business and Summary of Significant Accounting Policies). The following table represents the total transaction price for the remaining performance obligations as of December 31, 2018 related to non-cancelable contracts longer than 12 months in duration that is expected to be recognized over future periods.
(in millions)
 
Within 1 Year
 
Years 1-2
 
Years 2-3
 
Thereafter
Remaining performance obligations
 
$
37.8

 
$
23.7

 
$
5.4

 
$
0.4