Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Bonds and Parent Guarantees (Details)

v3.21.2
Commitments and Contingencies - Bonds and Parent Guarantees (Details) - USD ($)
$ in Millions
1 Months Ended
Apr. 30, 2019
Sep. 30, 2021
Performance Bonds    
Guarantor Obligations [Line Items]    
Total amount of outstanding performance bonds   $ 3,800
Estimate | Performance Bonds    
Guarantor Obligations [Line Items]    
Estimated cost to complete bonded projects   $ 1,100
PRONATEL | Project Contract Termination    
Guarantor Obligations [Line Items]    
Bond proceeds received $ 112