XML 144 R120.htm IDEA: XBRL DOCUMENT v3.21.1
PENSIONS - Asset Allocation (Details)
Dec. 31, 2020
Dec. 31, 2019
UK Scheme    
Pensions:    
Target allocation 100.00% 100.00%
UK Scheme | Equity    
Pensions:    
Target allocation 100.00% 100.00%
Marine Scheme    
Pensions:    
Target allocation 100.00% 100.00%
Marine Scheme | Cash    
Pensions:    
Target allocation 100.00% 100.00%