XML 94 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 17, 2020
Jun. 30, 2019
Entity Information [Line Items]      
Document Transition Report false    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Entity File Number 1-8097    
Entity Registrant Name Valaris plc    
Entity Incorporation, State or Country Code X0    
Entity Tax Identification Number 98-0635229    
Entity Address, Address Line One 110 Cannon Street    
Entity Address, City or Town London    
Entity Address, Country GB    
Entity Address, Postal Zip Code EC4N6EU    
City Area Code +44 (0)    
Local Phone Number 20 7659 4660    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 21,353,000
Entity Common Shares, Shares Outstanding   197,280,817  
Entity Shell Company false    
Amendment Flag false    
Entity Central Index Key 0000314808    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Emerging Growth Company false    
Entity Small Business false    
Four Point Five Zero Percent Senior Notes Due Two Thousand Twenty Four [Member]      
Entity Information [Line Items]      
Title of 12(b) Security 4.50% Senior Notes due 2024    
Security Exchange Name NYSE    
Trading Symbol VAL24    
Eight Point Zero Percent Senior Notes Due Two Thousand Twenty Four [Member]      
Entity Information [Line Items]      
Title of 12(b) Security 8.00% Senior Notes due 2024    
Security Exchange Name NYSE    
Trading Symbol VAL24A    
Five Point Two Percent Senior Notes [Member]      
Entity Information [Line Items]      
Title of 12(b) Security 5.20% Senior Notes due 2025    
Security Exchange Name NYSE    
Trading Symbol VAL25A    
7.75% Senior notes due 2026      
Entity Information [Line Items]      
Title of 12(b) Security 7.75% Senior Notes due 2026    
Security Exchange Name NYSE    
Trading Symbol VAL26    
5.75% Senior notes due 2044      
Entity Information [Line Items]      
Title of 12(b) Security 5.75% Senior Notes due 2044    
Security Exchange Name NYSE    
Trading Symbol VAL44    
4.70% Senior notes due 2021      
Entity Information [Line Items]      
Title of 12(b) Security 4.70% Senior Notes due 2021    
Security Exchange Name NYSE    
Trading Symbol VAL21    
Class A Ordinary Shares, US 0.40 Par Value [Member]      
Entity Information [Line Items]      
Title of 12(b) Security Class A ordinary shares, U.S. $0.40 par value    
Security Exchange Name NYSE    
Trading Symbol VAL