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Revenue Recognition - Deferred Income (Details)
$ in Millions
6 Months Ended
Mar. 29, 2019
USD ($)
Movement in Deferred Income [Roll Forward]  
Deferred income beginning balance $ 281.5
Deferred income ending balance 233.6
Accounting Standards Update 2014-09  
Movement in Deferred Income [Roll Forward]  
Add: Net increase in current period deferred income 628.5
Less: Recognition of deferred income $ (676.4)