XML 111 R99.htm IDEA: XBRL DOCUMENT v3.20.2
Financial instruments and financial risk management - Foreign currency risk (Details)
€ in Millions, £ in Millions, $ in Millions
Mar. 31, 2020
GBP (£)
Mar. 31, 2020
USD ($)
Mar. 31, 2020
$ / €
Mar. 31, 2020
€ / $
Mar. 31, 2020
€ / £
Mar. 31, 2020
EUR (€)
Mar. 31, 2019
GBP (£)
Mar. 31, 2019
USD ($)
Mar. 31, 2019
€ / $
Mar. 31, 2019
€ / £
Mar. 31, 2019
EUR (€)
Mar. 31, 2018
GBP (£)
Mar. 31, 2018
USD ($)
Mar. 31, 2018
€ / $
Mar. 31, 2018
€ / £
Mar. 31, 2018
EUR (€)
Disclosure of detailed information about financial instruments [line items]                                
Year end foreign currency rate     1.0956 1.1029 0.8883       1.1217 0.8606       1.2321 0.8756  
Monetary assets £ 22.5 $ 2,150.1       € 1,974.8 £ 17.0 $ 485.2     € 452.1 £ 12.2 $ 168.0     € 150.2
Monetary liabilities   1,181.0       1,074.7   202.4     180.5   246.1     199.8
Assets measured at fair value           671.7         536.2         214.7
Cross currency interest rate swap contract                                
Disclosure of detailed information about financial instruments [line items]                                
Assets measured at fair value           2.0         2.0         0.0
Current and non-current maturities of debt | USD                                
Disclosure of detailed information about financial instruments [line items]                                
Monetary liabilities   129.2       117.1   202.4     180.5   246.1     199.8
Pre-delivery Aircraft Payables                                
Disclosure of detailed information about financial instruments [line items]                                
Monetary liabilities   1,051.8       957.6                    
Cash and liquid resources | GBP                                
Disclosure of detailed information about financial instruments [line items]                                
Monetary assets £ 22.5         25.3 £ 17.0       19.6 £ 12.2       13.9
Cash and liquid resources | USD                                
Disclosure of detailed information about financial instruments [line items]                                
Monetary assets   $ 2,150.1       € 1,949.5   $ 485.2     € 432.5   $ 168.0     € 136.3