Pension and Other Postretirement Benefits - Weighted Average Assumptions Used to Determine Net Periodic Benefit Costs (Parenthetical) (Detail) (Other Postretirement Benefits [Member])	0 Months Ended	12 Months Ended
	Jul. 02, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Postretirement Benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Updated discount rate	4.95%	4.10%	4.90%	5.60%