PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 6,227	$ 8,449	$ 18,969	$ 30,167
Interest cost	7,799	7,163	22,895	20,679
Expected return on plan assets	(10,521)	(9,306)	(31,359)	(27,067)
Amortization of prior service cost	157	165	472	719
Amortization of unrecognized actuarial loss	2,147	3,560	5,113	11,767
Curtailments	0	(2,818)	0	(107)
Net postretirement benefit cost (income)	5,809	7,213	16,090	36,158
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	71	81	212	280
Interest cost	220	213	658	630
Amortization of prior service cost	(164)	(158)	(492)	(472)
Amortization of unrecognized actuarial loss	(203)	(140)	(608)	(460)
Net postretirement benefit cost (income)	$ (76)	$ (4)	$ (230)	$ (22)