Table:
0
A
B
C
1
December 31, 2019
December 31, 2018
2
(Dollars in millions)
3
Customer receivables(1)
$2,194
2,346
4
Contract liabilities
1,028
860
5
Contract assets
130
140

Questions and formulas:
Question: What is the change in contract liabilities in 2019 from 2018?
Formula: B4-C4
Formula2: B4-C4
Level: Calculation
Question: What is the average amount of contract assets for 2018 and 2019?
Formula: (B5+C5)/2
Formula2: (B5+C5)/2
Level: Calculation