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COMPREHENSIVE INCOME
 6 Months Ended
Jun. 30, 2019
Equity [Abstract]  
COMPREHENSIVE INCOME COMPREHENSIVE INCOME

Comprehensive income includes changes in the fair value of certain financial derivative instruments that qualify for hedge accounting, unrealized gains and losses on certain investments, and actuarial gains/losses arising from the Company’s postretirement benefit obligation. The differences between Net income and Comprehensive income for the three and six months ended June 30, 2019 and 2018 were as follows:

 
Three months ended June 30,
(in millions)
2019
 
2018
NET INCOME
$
741

 
$
733

Unrealized gain (loss) on fuel derivative instruments, net of
  deferred taxes of ($17) and $66
(56
)
 
216

Unrealized gain (loss) on interest rate derivative instruments, net of
  deferred taxes of ($4) and $1
(15
)
 
1

Other, net of deferred taxes of $1 and $-
5

 
3

Total other comprehensive income (loss)
$
(66
)
 
$
220

COMPREHENSIVE INCOME
$
675

 
$
953


 
Six months ended June 30,
(in millions)
2019
 
2018
NET INCOME
$
1,128

 
$
1,195

Unrealized gain on fuel derivative instruments, net of
  deferred taxes of $6 and $91
19

 
297

Unrealized gain (loss) on interest rate derivative instruments, net of
  deferred taxes of ($8) and $1
(25
)
 
4

Other, net of deferred taxes of $4 and $-
16

 
3

Total other comprehensive income
$
10

 
$
304

COMPREHENSIVE INCOME
$
1,138

 
$
1,499




A rollforward of the amounts included in AOCI is shown below for the three and six months ended June 30, 2019:

(in millions)
Fuel derivatives
 
Interest rate derivatives
 
Defined benefit plan items
 
Other
 
Deferred tax
 
Accumulated other
comprehensive income (loss)
Balance at March 31, 2019
$
42

 
$
(14
)
 
$
58

 
$
39

 
$
(29
)
 
$
96

Changes in fair value
(71
)
 
(20
)
 
—

 
6

 
20

 
(65
)
Reclassification to earnings
(2
)
 
1

 
—

 
—

 
—

 
(1
)
Balance at June 30, 2019
$
(31
)
 
$
(33
)
 
$
58

 
$
45

 
$
(9
)
 
$
30



(in millions)
Fuel derivatives
 
Interest rate derivatives
 
Defined benefit plan items
 
Other
 
Deferred tax
 
Accumulated other
comprehensive income (loss)
Balance at December 31, 2018
$
(56
)
 
$
—

 
$
58

 
$
25

 
$
(7
)
 
$
20

Changes in fair value
16

 
(35
)
 
—

 
20

 
—

 
1

Reclassification to earnings
9

 
2

 
—

 
—

 
(2
)
 
9

Balance at June 30, 2019
$
(31
)
 
$
(33
)
 
$
58

 
$
45

 
$
(9
)
 
$
30




The following tables illustrate the significant amounts reclassified out of each component of AOCI for the three and six months ended June 30, 2019:

Three months ended June 30, 2019
(in millions)
 
Amounts reclassified from AOCI
 
Affected line item in the unaudited Condensed Consolidated Statement of
Comprehensive Income
AOCI components
 
 
Unrealized gain on fuel derivative instruments
 
$
(2
)
 
Fuel and oil expense
 
 
—

 
Less: Tax expense
 
 
$
(2
)
 
Net of tax
Unrealized loss on interest rate derivative instruments
 
$
1

 
Interest expense
 
 
—

 
Less: Tax expense
 
 
$
1

 
Net of tax
 
 
 
 
 
Total reclassifications for the period
 
$
(1
)
 
Net of tax

Six months ended June 30, 2019
(in millions)
 
Amounts reclassified from AOCI
 
Affected line item in the unaudited Condensed Consolidated Statement of
Comprehensive Income
AOCI components
 
 
Unrealized loss on fuel derivative instruments
 
$
9

 
Fuel and oil expense
 
 
2

 
Less: Tax Expense
 
 
$
7

 
Net of tax
Unrealized loss on interest rate derivative instruments
 
$
2

 
Interest expense
 
 
—

 
Less: Tax Expense
 
 
$
2

 
Net of tax
 
 
 
 
 
Total reclassifications for the period
 
$
9

 
Net of tax