Receivables - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Jan. 03, 2015
Receivables [Abstract]
Minimum payment term for trade and other accounts receivable (in days)	30 days
Maximum payment term for trade and other accounts receivable (in days)	120 days
Average payment term for finance receivables (in years)	3 years
Maximum payment term for contract receivables (in years)	10 years
Minimum period past due to consider receivable balances as delinquent (days)	30 days
Minimum period past due to consider non-accrual finance receivables nonperforming (days)	90 days
Minimum period past due to declare receivable as non-accrual status (days)	90 days
Impaired finance receivables	$ 15.3	$ 15.5
Impaired contract receivables	$ 1.7	$ 1.5