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Employee Retirement Benefits
3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
Employee Retirement Benefits Employee Retirement Benefits
NEE sponsors a qualified noncontributory defined benefit pension plan for substantially all employees of NEE and its subsidiaries and sponsors a contributory postretirement plan for other benefits for retirees of NEE and its subsidiaries meeting certain eligibility requirements.

The components of net periodic cost (income) for the plans are as follows:
 Pension BenefitsPostretirement Benefits
 Three Months Ended March 31,Three Months Ended March 31,
 2022202120222021
 (millions)
Service cost$22 $22 $ $
Interest cost19 16 1 
Expected return on plan assets(91)(85) — 
Amortization of actuarial loss 1 
Amortization of prior service benefit — (1)(4)
Net periodic cost (income) at NEE$(50)$(41)$1 $(1)
Net periodic cost (income) allocated to FPL$(34)$(27)$1 $(1)