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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
Schedule II – Valuation and Qualifying Accounts
Occidental Petroleum Corporation
and Subsidiaries

 
 
 
 
Additions
 
 
 
 
 
millions
 
Balance at Beginning of Period

 
Charged to
Costs and
Expenses

 
Charged to
Other
Accounts

 
Deductions (a)

 
Balance at
End of
Period

 
2019
 
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
668

 
$
126

 
$
(6
)
 
$
—

 
$
788

(b) 
Environmental, litigation and other reserves
 
$
994

 
$
182

 
$
1,408

 
$
(173
)
 
$
2,411

(c) 
 
 
 
 
 
 
 
 
 
 
 
 
2018
 
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
594

 
$
77

 
$
(3
)
 
$
—

 
$
668

(b) 
Environmental, litigation, tax and other reserves
 
$
935

 
$
140

 
$
85

 
$
(166
)
 
$
994

(c) 
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
558

 
$
37

 
$
(2
)
 
$
1

 
$
594

(b) 
Environmental, litigation, tax and other reserves
 
$
997

 
$
45

 
$
53

 
$
(160
)
 
$
935

(c) 
Note:  The amounts presented represent continuing operations.
(a) 
Primarily represents payments.
(b) 
Of these amounts, $22 million, $24 million and $18 million in 2019, 2018, and 2017, respectively, are classified as current.
(c) 
Of these amounts, $188 million, $146 million and $163 million in 2019, 2018, and 2017, respectively, are classified as current.