As of December 31, 2019 and 2018, other long-term liabilities consisted of the following (in millions):
December 31,
2019
2018
Accrued warranty reserve
$
745
547
Build-to-suit lease liability
—
1,662
Operating lease right-of-use liabilities
956
Deferred rent expense
59
Financing obligation
37
50
Sales return reserve
545
84
Other noncurrent liabilities
372
308
Total other long-term liabilities
2,655
2,710
No definition available.
Tabular disclosure of other noncurrent liabilities.