Significant Accounting Policies (Tables)

12 Months Ended

Mar. 25, 2017

Significant Accounting Policies [Abstract]

Company's sales mix

	Year Ended Fiscal March
	2017		2016		2015
Brakes	13	%	15	%	15	%
Exhaust	2		3		3
Steering	9		10		10
Tires	49		45		44
Maintenance	27		27		28
Total	100	%	100	%	100	%

Weighted average fair value of options assumptions

	Year Ended Fiscal March
	2017		2016		2015
Risk-free interest rate	1.20	%	1.25	%	1.23	%
Expected life, in years	4		4		4
Expected volatility	25.9	%	27.2	%	27.7	%
Expected dividend yield	1.10	%	0.96	%	0.99	%