Weighted-Average Assumptions Used To Determine Benefit Obligation (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items]
Discount rate	9.55% per annum	8.85% per annum
Long-term rate of compensation increase	11% per annum for first year, 10% for next five years & 7% per annum thereafter	11% per annum for first year, 10% for next two years & 7% per annum thereafter