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Contingent liabilities and legal proceedings - Continuing matters relating to the resignation of Dr Vijay Mallya from USL and USL internal inquiries (Details) - 25 February agreement
£ in Millions, $ in Millions
Mar. 12, 2018
instalment
Nov. 16, 2017
USD ($)
Nov. 16, 2017
GBP (£)
Feb. 25, 2016
USD ($)
Feb. 25, 2016
GBP (£)
Feb. 25, 2016
GBP (£)
Dr Mallya            
Disclosure of contingent liabilities [line items]            
Committed payment relating to disengagement agreements       $ 75 £ 63  
Consideration payment period       5 years 5 years  
Amount paid relating to disengagement agreements       $ 40 £ 33  
Amount payable relating to disengagement agreements in equal installments       7   £ 6
Repayment demanded of original amount paid       40 33  
Number Of Disputed Instalments 2          
Watson Limited            
Disclosure of contingent liabilities [line items]            
Release of obligations to indemnify under guarantee of certain borrowings       $ 141 £ 118  
Damages related to breach of associated security documents   $ 142 £ 118