XML 13 R14.htm IDEA: XBRL DOCUMENT v3.19.3
Property and Equipment
9 Months Ended
Sep. 30, 2019
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment as of September 30, 2019 and December 31, 2018 consisted of the following, at cost (in millions):


September 30, 2019December 31, 2018
Drilling rigs and equipment$17,615.1  $14,542.5  
Work-in-progress574.6  779.2  
Other203.2  195.3  
$18,392.9  $15,517.0  

Impairment of Long-Lived Assets

On a quarterly basis, we evaluate the carrying value of our property and equipment to identify events or changes in circumstances that indicate the carrying value may not be recoverable.
During the third quarter of 2019, we decided to retire VALARIS 5006, which was reclassified to held-for-sale. We recognized a pre-tax, non-cash impairment charge of $88.2 million, which represents the difference between the carrying value of the rig and related assets and their estimated fair values, less selling costs.