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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Schedule of Property And Equipment Property and equipment as of June 30, 2021 and December 31, 2020 consisted of the following (in millions):
SuccessorPredecessor
June 30,
2021
December 31, 2020
Drilling rigs and equipment$855.8 $12,584.4 
Work-in-progress23.4 446.1 
Other35.2 178.8 
$914.4 $13,209.3