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Pension Plans and Other Retirement Benefits (Tables)
3 Months Ended
Apr. 30, 2022
Retirement Benefits [Abstract]  
Financial Information Related to Funded Defined Benefit Pension Plan and Unfunded Supplemental Retirement Plan Presented below is financial information relating to TJX’s funded defined benefit pension plan (“qualified pension plan” or “funded plan”) and its unfunded supplemental pension plan (“unfunded plan”) for the periods shown:
 Funded PlanUnfunded Plan
 Thirteen Weeks EndedThirteen Weeks Ended
In thousandsApril 30,
2022
May 1,
2021
April 30,
2022
May 1,
2021
Service cost$12,168 $12,219 $727 $755 
Interest cost14,426 12,812 931 780 
Expected return on plan assets(22,228)(23,992) — 
Amortization of net actuarial loss and prior service cost4,274 2,803 879 1,154 
Total expense$8,640 $3,842 $2,537 $2,689