STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 item
Performance awards
Stock-based compensation
Number of awards earned	0
PLC | SARs
Stock-based compensation
Expiration period from date of grant	10 years
Exercisable period of grants from grant date	5 years
Beginning of annual installments from date of grant	1 year
Weighted-Average Base Price per share
Balance at the beginning of the period (in dollars per share)	22.15
SARs exercised / forfeited (in dollars per share)	22.83
Balance at the end of the period (in dollars per share)	22.12
No. of SARs
Balance at the beginning of the period (in shares)	1,641,167
SARs exercised / forfeited (in shares)	69,899
Balance at the end of the period (in shares)	1,571,268
SARs issued (in shares)	0
PLC | SARs | Minimum
Stock-based compensation
Number of annual installments to exercise stock appreciation rights	3
PLC | SARs | Maximum
Stock-based compensation
Number of annual installments to exercise stock appreciation rights	4
PLC | Restricted stock units
Stock-based compensation
Performance shares award issued	141,000
Estimated fair value of performance shares issued	4.4
Vesting percentage	50.00%
PLC | Performance awards
Stock-based compensation
Performance shares award issued	298,500
Estimated fair value of performance shares issued	9.3
Period over which ROE is calculated	3 years
Minimum percentage of the company's ROE to earn awards under 2013 performance awards	10.00%
Minimum percentage of Company's ROE to earn maximum awards under 2012 performance awards	11.50%