DEBT - Revolving Credit Facility (Detail)	6 Months Ended
	Jun. 30, 2019 USD ($) equity_cure_right fiscal_quarter	Dec. 31, 2018 USD ($)	Jun. 29, 2018 USD ($)
Debt Instrument [Line Items]
Revolving credit facility borrowings	$ 200,000,000	$ 200,000,000
Letters of credit utilized	533,100,000	397,200,000
Revolving Credit Facility
Debt Instrument [Line Items]
Unamortized debt issuance costs	2,200,000	2,700,000
Letters of credit utilized	79,800,000	62,300,000
Line of credit available	520,200,000	$ 537,700,000
Revolving Credit Facility | Restated Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity on line of credit			$ 600,000,000.0
Revolving credit facility borrowings	$ 40,000,000.0
Maximum consecutive days for financial covenant	5 days
Number of consecutive fiscal quarters in which equity cure right can be used twice (in fiscal quarter) | fiscal_quarter	4
Maximum number of times equity cure right can be exercised | equity_cure_right	5