Employee Benefit Plans (Defined Benefit Pension Plan Asset Allocation) (Detail)	Dec. 31, 2015	Dec. 31, 2014
Cash and Cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	1.10%	0.30%
Equities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	57.20%	45.50%
Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	39.30%	32.50%
Balanced Funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets		19.40%
Other
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	2.40%	2.30%