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Deferred Contract Costs
 3 Months Ended
Mar. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Deferred Contract Costs Deferred Contract Costs
Origination and fulfillment costs from contracts with customers capitalized as of March 31, 2021, and December 31, 2020, consist of the following (in millions):
March 31, 2021December 31, 2020
Contract costs on implementations in progress$186 $245 
Contract origination costs on completed implementations, net540 470 
Contract fulfillment costs on completed implementations, net233 202 
Total Deferred contract costs, net$959 $917 

Amortization of deferred contract costs on completed implementations was $68 million and $51 million during the three months ended March 31, 2021 and 2020, respectively, and there were no significant impairment losses in relation to the costs capitalized for the periods presented.