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ACQUISITIONS AND DIVESTITURES - Preliminary Purchase Price Allocation and Other Adjustments to Purchase Price Allocations (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 2,240,597	$ 2,231,582	$ 2,065,103
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Fixed assets	1,184
Intangibles	14,277
Goodwill	10,850
Net other assets/ (liabilities)	(460)
Debt	321
Net deferred tax liabilities	(815)
Total purchase price allocation	$ 25,357