Stock Compensation - Assumptions Used in Determination of Grant Date Fair Values Using Black-Scholes Option Pricing Model (Detail)	6 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
HGI [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.85%	1.19%
Assumed dividend yield	0.00%	0.00%
Expected option term		6 years
Volatility		33.00%
HGI [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected option term	5 years 3 months 18 days
Volatility	42.80%
HGI [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected option term	6 years
Volatility	44.00%
FGL [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.80%	0.80%
Assumed dividend yield	8.00%	10.00%
Expected option term	4 years 6 months	4 years 6 months
Volatility	27.00%	35.00%