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Leases - Additional Information (Details)
$ in Millions
1 Months Ended
Sep. 03, 2019
rig
Dec. 31, 2018
USD ($)
Leases [Abstract]    
Number of leased jack-up rigs | rig 3  
Rental commitments, total   $ 38
Rental commitments, 2019   11
Rental commitments, 2020   9
Rental commitments, 2021   9
Rental commitments, 2022   5
Rental commitments, 2023   3
Rental commitments, thereafter   $ 1