v3.19.3.a.u2
Leases - Components of Lease Cost (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2019
USD ($)
 [1]
Lease cost:  
Operating lease cost $ 141 [2]
Variable lease cost 39 [3]
Total lease cost $ 180
[1]

(1)

Rent expense and certain office equipment expense under lease agreements amounted to $135 million and $132 million in 2018 and 2017, respectively.
[2] Amount includes short-term leases, which are immaterial for 2019.
[3] Amount includes operating lease payments, which may be adjusted based on usage, changes in an index or market rate.