Pension Plans | SERP Plans | Postretirement Plans | |||||||||||||||||||||
2013 | 2012 | 2013 | 2012 | 2013 | 2012 | ||||||||||||||||||
Balance at beginning of year | $ | 406,395 | $ | 359,727 | $ | 74,861 | $ | 71,717 | $ | 16,036 | $ | 18,247 | |||||||||||
Acquisition of Warnaco | 182,379 | — | 165 | — | 4,472 | — | |||||||||||||||||
Service cost | 18,721 | 15,315 | 4,415 | 3,579 | 83 | — | |||||||||||||||||
Interest cost | 26,395 | 17,974 | 3,619 | 3,366 | 863 | 798 | |||||||||||||||||
Benefit payments | (30,541 | ) | (14,456 | ) | (4,392 | ) | (2,674 | ) | — | — | |||||||||||||
Benefit payments, net of retiree contributions | — | — | — | — | (2,150 | ) | (1,959 | ) | |||||||||||||||
Plan curtailments | — | — | — | — | (2,172 | ) | — | ||||||||||||||||
Plan settlements | — | — | — | (6,977 | ) | — | — | ||||||||||||||||
Medicare subsidy | — | — | — | — | 14 | 56 | |||||||||||||||||
Actuarial (gain) loss | (31,838 | ) | 27,835 | 2,120 | 5,850 | (1,046 | ) | (1,106 | ) | ||||||||||||||
Balance at end of year | $ | 571,511 | $ | 406,395 | $ | 80,788 | $ | 74,861 | $ | 16,100 | $ | 16,036 |