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Casualty, Environmental and Other Reserves (Tables)
 12 Months Ended
Dec. 31, 2019
Casualty, Environmental and Other Reserves [Abstract]  
Schedule of Claims Activity

Activity related to casualty, environmental and other reserves is as follows:
 
Casualty
 
Environmental
 
Other
 
 
(Dollars in Millions)
Reserves
 
Reserves
 
Reserves
 
Total
December 30, 2016
$
229

 
$
95

 
$
50

 
$
374

Charged to Expense
43

 
26

 
45

 
114

Payments
(44
)
 
(31
)
 
(39
)
 
(114
)
December 31, 2017
228

 
90

 
56

 
374

Charged to Expense
21

 
10

 
41

 
72

Payments
(50
)
 
(20
)
 
(52
)
 
(122
)
December 31, 2018
199

 
80

 
45

 
324

Charged to Expense
56

 
17

 
34

 
107

Payments
(68
)
 
(23
)
 
(35
)
 
(126
)
December 31, 2019
$
187

 
$
74

 
$
44

 
$
305
Schedule of Balance Sheet Presentation of Casualty, Environmental and Other Reserves Casualty, environmental and other reserves are provided for in the consolidated balance sheets as shown in the table below.
 
December 2019
 
December 2018
(Dollars in Millions)
Current
 
Long-term
 
Total
 
Current
 
Long-term
 
Total
Casualty:
 
 
 
 
 
 
 
 
 
 
 
Personal Injury
$
42

 
$
87

 
$
129

 
$
40

 
$
103

 
$
143

Occupational
6

 
52

 
58

 
10

 
46

 
56

Total Casualty
$
48

 
$
139

 
$
187

 
$
50

 
$
149

 
$
199

Environmental
31

 
43

 
74

 
39

 
41

 
80

Other
21

 
23

 
44

 
24

 
21

 
45

Total
$
100

 
$
205

 
$
305

 
$
113

 
$
211

 
$
324