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Other Comprehensive Income / (Loss)
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Other Comprehensive Income / (Loss) Other Comprehensive Income / (Loss)
    
CSX reports comprehensive earnings or loss in accordance with the Comprehensive Income Topic in the ASC in the consolidated comprehensive income statement. Total comprehensive earnings are defined as all changes in shareholders' equity during a period, other than those resulting from investments by and distributions to shareholders (e.g. issuance of equity securities and dividends). Generally, for CSX, total comprehensive earnings equal net earnings plus or minus adjustments for pension and other post-retirement liabilities. Total comprehensive earnings represent the activity for a period net of tax and were $3.3 billion, $3.1 billion and $5.6 billion for 2019, 2018 and 2017, respectively.

NOTE 16. Other Comprehensive Income / (Loss), continued

While total comprehensive earnings is the activity in a period and is largely driven by net earnings in that period, accumulated other comprehensive income or loss (“AOCI”) represents the cumulative balance of other comprehensive income, net of tax, as of the balance sheet date. For CSX, AOCI is primarily the cumulative balance related to pension and other post-retirement benefit adjustments and CSX's share of AOCI of equity method investees.

Changes in the AOCI balance by component are shown in the following table. Amounts reclassified in pension and other post-employment benefits to net earnings relate to the amortization of actuarial losses and are included in other income-net on the consolidated income statements. See Note 9. Employee Benefit Plans for further information. Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified in other to net earnings are included in equity earnings of affiliates on the consolidated income statements.
 
Pension and Other Post-Employment Benefits
Other
Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
 
 
 
Balance December 30, 2016 - Net of Tax
$
(580
)
$
(60
)
$
(640
)
Other Comprehensive Income (Loss)
 
 
 
Income Before Reclassifications
148

13

161

Amounts Reclassified to Net Earnings
56

2

58

Tax Expense
(64
)
(1
)
(65
)
Total Other Comprehensive Income
140

14

154

Balance December 31, 2017 - Net of Tax
(440
)
(46
)
(486
)
Other Comprehensive Income (Loss)
 
 
 
Reclassification of Stranded Tax Effects (a)
(108
)
1

(107
)
Loss Before Reclassifications
(111
)
(8
)
(119
)
Amounts Reclassified to Net Earnings
38

(6
)
32

Tax Benefit
17

2

19

Total Other Comprehensive Loss
(164
)
(11
)
(175
)
Balance December 31, 2018 - Net of Tax
(604
)
(57
)
(661
)
Other Comprehensive Income (Loss)
 
 
 
Loss Before Reclassifications
(43
)
(5
)
(48
)
Amounts Reclassified to Net Earnings
23

8

31

Tax Benefit
5

(2
)
3

Total Other Comprehensive (Loss) Income
(15
)
1

(14
)
Balance December 31, 2019 - Net of Tax
$
(619
)
$
(56
)
$
(675
)

(a) As the result of a standard update adopted in 2018, certain tax effects stranded in accumulated other comprehensive income as a result of tax reform were reclassified to retained earnings.