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Derivative Financial Instruments - Narrative (Details)
£ in Millions, $ in Millions
Sep. 26, 2020
USD ($)
Sep. 26, 2020
GBP (£)
Interest rate swaps    
Derivative [Line Items]    
Notional Value | $ $ 750  
Cross-currency swaps    
Derivative [Line Items]    
Notional Value | £   £ 234
Senior Notes | 2.60% Senior Notes    
Derivative [Line Items]    
Interest rate 2.60% 2.60%