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Deferred Contract Costs (Tables)
3 Months Ended
Mar. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Deferred Contract Cost Detail
Origination and fulfillment costs from contracts with customers capitalized as of March 31, 2018 and December 31, 2017 consisted of the following (in millions):
 
March 31, 2018
 
December 31, 2017
Installations and conversions in progress
115

 
104

Incremental contract origination costs completed, net
150

 
127

Costs to fulfill a contract, net
127

 
123

Total deferred contract costs, net
$
392

 
$
354