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Reinsurance - Effect of Reinsurance on Premiums Earned, Benefits Incurred and Reserve Changes (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]    
Direct, Insurance Premiums $ 72.4 $ 76.2
Assumed, Insurance Premiums 12.1 12.2
Ceded, Insurance Premiums (70.7) (71.6)
Net Insurance Premiums 13.8 16.8
Direct, Benefits and Other Changes in Insurance Policy Reserves 139.6 237.7
Assumed, Benefits and Other Changes in Insurance Policy Reserves 6.5 8.5
Ceded, Benefits and Other Changes in Insurance Policy Reserves (62.5) (69.3)
Net Benefits and Other Changes in Insurance Policy Reserves $ 83.6 $ 176.9