SHARE-BASED COMPENSATION - Performance Awards (Detail) - $ / shares shares in Thousands	7 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	May 31, 2015	May 31, 2014
Long Term Performance Stock Unit Awards
No. of Stock Units
Beginning of year (in shares)	23	59	0
Granted (in shares)	36	0	23
Vested and settled (in shares)	0	0	0
Cancelled (in shares)	0	0	0
End of year (in shares)	59	59	23	0
Weighted Average Fair Value
Beginning of year (in USD per share)	$ 42.25	$ 37.16	$ 0.00
Granted (in USD per share)	33.91	0.00	42.25
Vested and settled (in USD per share)	0.00	0.00	0.00
Cancelled (in USD per share)	0.00	0.00	0.00
Stock and stock units, end of year (in USD per share)	$ 37.16	$ 37.16	$ 42.25	$ 0.00
Performance Shares
No. of Stock Units
Beginning of year (in shares)	28	13	50	57
Granted (in shares)	0	0	0	17
Vested and settled (in shares)	(15)	(13)	(22)	(24)
Cancelled (in shares)	0	0	0	0
End of year (in shares)	13	0	28	50
Weighted Average Fair Value
Beginning of year (in USD per share)	$ 32.86	$ 35.15	$ 30.63	$ 25.47
Granted (in USD per share)	0.00	0.00	0.00	36.40
Vested and settled (in USD per share)	30.82	35.15	27.66	22.65
Cancelled (in USD per share)	0.00	0.00	0.00	0.00
Stock and stock units, end of year (in USD per share)	$ 35.15	$ 0.00	$ 32.86	$ 30.63