Revenue Recognition - Narrative (Details)	9 Months Ended
	Jun. 30, 2019 numberOfPrincipalActivities numberOfSegments
Revenue from Contract with Customer [Abstract]
Number of principal activities | numberOfPrincipalActivities	3
Number of reportable segments | numberOfSegments	3
Sales at a point in time
Disaggregation of Revenue [Line Items]
Percentage of revenue recognized	98.00%
Franchised revenues transferred over time
Disaggregation of Revenue [Line Items]
Percentage of revenue recognized	2.00%
Minimum
Disaggregation of Revenue [Line Items]
Payment terms	30 days
Expected timing of satisfaction for revenue performance obligations	10 years
Maximum
Disaggregation of Revenue [Line Items]
Payment terms	60 days
Expected timing of satisfaction for revenue performance obligations	15 years