Changes in present value of defined benefit obligations for the years ended December 31, 2016 and 2017 were as follows:
| 2016 | 2017 | |||||||
| (in millions of Won) | ||||||||
|
Defined benefit obligations at the beginning of period |
￦ | 1,714,115 | 1,733,020 | |||||
|
Current service costs |
285,706 | 209,612 | ||||||
|
Interest costs |
39,286 | 35,830 | ||||||
|
Remeasurements: |
(32,927 | ) | 51,994 | |||||
|
— Gain from change in financial assumptions |
(72,910 | ) | (50,218 | ) | ||||
|
— Loss (gain) from change in demographic assumptions |
(4,140 | ) | 15,952 | |||||
|
— Others |
44,123 | 86,260 | ||||||
|
Benefits paid |
(278,278 | ) | (185,220 | ) | ||||
|
Others |
5,118 | (2,101 | ) | |||||
|
|
|
|
|
|||||
|
Defined benefit obligations at the end of period |
￦ | 1,733,020 | 1,843,135 | |||||
|
|
|
|
|
|||||
Changes in fair value of plan assets for the years ended December 31, 2016 and 2017 were as follows:
| 2016 | 2017 | |||||||
| (in millions of Won) | ||||||||
|
Fair value of plan assets at the beginning of period |
￦ | 1,532,090 | 1,693,118 | |||||
|
Interest on plan assets |
37,385 | 45,516 | ||||||
|
Remeasurement of plan assets |
(6,963 | ) | (17,190 | ) | ||||
|
Contributions to plan assets |
328,671 | 164,828 | ||||||
|
Benefits paid |
(189,817 | ) | (168,643 | ) | ||||
|
Others |
(8,248 | ) | (3,463 | ) | ||||
|
|
|
|
|
|||||
|
Fair value of plan assets at the end of period |
￦ | 1,693,118 | 1,714,166 | |||||
|
|
|
|
|
|||||