pre_text: Other Current Assets The following table presents details of other current assets in our consolidated balance sheets:
table: As of December 31,
table: 2019 2018
table: (Dollars in millions)
table: Prepaid expenses $274 307
table: Income tax receivable 35 82
table: Materials, supplies and inventory 105 120
table: Contract assets 42 52
table: Contract acquisition costs 178 167
table: Contract fulfillment costs 115 82
table: Other 59 108
table: Total other current assets $808 918
question: Analyse this data from a financial earnings document. What is the change in contract assets in 2019?