v3.21.1
Post-Employment Benefits (Tables)
3 Months Ended
Mar. 31, 2021
Postemployment Benefits [Abstract]  
Summary of net periodic benefit costs relating to the company's defined benefit and other post-employment plans The following table summarizes net periodic benefit cost relating to the company’s defined benefit and other post-employment plans:
Defined
benefit plans
Other post-
employment plans
Three months ended
March 31,
Three months ended
March 31,
(in millions)2021202020212020
Service cost$112 $92 $12 $12 
Interest cost58 61 
Expected return on plan assets(166)(135)— — 
Amortization of prior service cost (credit)(10)(1)
Amortization of actuarial loss70 54 
Net periodic benefit cost$75 $73 $15 $27