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Net Defined Benefit Liabilities (Tables)
 12 Months Ended
Dec. 31, 2018
Statement [LineItems]  
Summary of Amount Recognized in the Statements of Financial Position

The amounts recognized in the statements of financial position are determined as follows:

 

(In millions of Korean won)    December 31, 2017     December 31, 2018  

Present value of defined benefit obligations

    ￦ 1,911,166     ￦ 2,201,876  

Fair value of plan assets

      (1,519,779 )      (1,643,046 ) 
  

 

 

    

 

 

  

Liabilities

    ￦ 395,079     ￦ 561,269  
  

 

 

    

 

 

  

Assets in the statement of financial position

    ￦ 3,692     ￦ 2,439  
  

 

 

    

 

 

  
Summary of Changes in the Defined Benefit Obligations

Changes in the defined benefit obligations for the years ended December 31, 2017 and 2018, are as follows:

 

(In millions of Korean won)    2017     2018  

Beginning

    ￦ 1,713,184     ￦ 1,911,166  

Current service cost

      210,336       225,667  

Interest expense

      38,994       51,691  

Benefit paid

      (154,600 )      (121,372 ) 

Changes due to settlements of plan

      (61 )      9,801  

Remeasurements:

     

Actuarial gains and losses arising from changes in demographic assumptions

      3,353       4,600  

Actuarial gains and losses arising from changes in financial assumptions

      36,946       116,458  

Actuarial gains and losses arising from experience adjustments

      63,583       (19,919 ) 

Changes in scope of Consolidation

      (569 )      23,784  
  

 

 

    

 

 

  

Ending

    ￦ 1,911,166     ￦ 2,201,876  
  

 

 

    

 

 

  

Changes in the fair value of plan assets for the years ended December 31, 2017 and 2018, are as follows:

 

(In millions of Korean won)    2017     2018  

Beginning

    ￦ 1,334,780     ￦ 1,519,779  

Interest income

      30,303       41,233  

Remeasurements:

     

Return on plan assets (excluding amounts included in interest income)

      (5,557 )      1,409  

Benefits paid

      (130,510 )      (116,303 ) 

Employer contributions

      290,895       179,100  

Changes in scope of consolidation

      (132 )      17,828  
  

 

 

    

 

 

  

Ending

    ￦ 1,519,779     ￦ 1,643,046  
Summary of Amounts Recognized in the Statement of Profit or Loss

Amounts recognized in the statement of profit or loss for the years ended December 31, 2016, 2017 and 2018, are as follows:

 

(In millions of Korean won)    2016     2017     2018  

Current service cost

    ￦ 205,114     ￦ 210,336     ￦ 225,667  

Net Interest cost

      12,141       8,691       10,458  

Past service cost

      424       (61 )      9,801  

Transfer out

      (8,737 )      (9,196 )      (13,881 ) 
  

 

 

    

 

 

    

 

 

  

Total expenses

    ￦ 208,942     ￦ 209,770     ￦ 232,045  
  

 

 

    

 

 

    

 

 

  
Summary of Principal Actuarial Assumptions

Principal actuarial assumptions used are as follows:

 

     December 31, 2016   December 31, 2017   December 31, 2018

Discount rate

    2.43%   2.76%   2.77%

Future salary increase

    4.10%   4.51%   4.61%
Summary of Expected Maturity Analysis of Undiscounted Pension Benefits

The expected maturity analysis of undiscounted pension benefits as at December 31, 2018, is as follows:

 

(In millions of Korean won)   

Less than

1 year

     

Between

1-2 years

     

Between

2-5 years

      Over 5 years      Total  

Pension benefits

    ￦ 183,106      ￦ 225,706      ￦ 726,283      ￦ 3,972,768      ￦ 5,107,863  
Defined benefit obligations [member]  
Statement [LineItems]  
Summary of Sensitivity of the Defined Benefit Obligations

The sensitivity of the defined benefit obligations as at December 31, 2018, to changes in the principal assumptions is:

 

(In percentage, in millions of Korean won)    Effect on defined benefit obligation  
     Changes in
assumption		    Increase in
assumption		     Decrease in
assumption		  

Discount rate

    0.5% point    ￦ (72,851 )    ￦ 82,527  

Salary growth rate

    0.5% point      75,647       (63,267 )