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Pension and Other Postretirement Benefits (Tables)
6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block] The components of net periodic pension cost were as follows (in millions):
 
April 11 - June 30, 2019
Service cost (1)
$
0.4

Interest cost (2)
6.5

Expected return on plan assets (2)
(8.2
)
Net periodic pension cost
$
(1.3
)
(1) 
Included in contract drilling and general and administrative expense in our condensed consolidated statements of operations.
(2) 
Included in other, net, in our condensed consolidated statements of operations.