SHARE-BASED COMPENSATION (DETAILS) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Additional shares authorized for issuance under 2007 Long-Term Equity Compensation Plan	6,000,000
Number of awards available for grant		6,454,519		6,454,519
Share based compensation expense incurred		$ 33	$ 10	$ 45	$ 20
Tax benefit related to share-based compensation costs incurred		3	2	5	4
Fair value - vested during period				40	63
Unrecognized share-based compensation costs		116		116
Unrecognized share-based compensation costs, weighted average period expected to be recognized (years)				2.9
Restricted Stock And Restricted Stock Units RSU [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Number of employees impacted by restricted stock award modification during the period		1
Accelerated and incremental share-based compensation expense related to senior leadership transitions.		$ 20
Nonvested restricted stock (number) - beginning of period				3,816,000
Granted (number)				2,167,000
Vested (number)				(1,232,000)
Forfeited (number)				(73,000)
Nonvested restricted stock (number) - end of period		4,678,000		4,678,000
Weighted average grant date fair value - beginning of period				$ 32.69
Weighted average grant date fair value - granted				$ 31.91
Weighted average grant date fair value - vested				$ 31.96
Weighted average grant date fair value - forfeited		$ 32.12		$ 32.12
Weighted average grant date fair value - end of period		$ 32.58		$ 32.58
Performance Shares [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Nonvested restricted stock (number) - beginning of period				0
Granted (number)				250,000
Vested (number)				0
Forfeited (number)				0
Nonvested restricted stock (number) - end of period		250,000		250,000
Weighted average grant date fair value - beginning of period				$ 0.00
Weighted average grant date fair value - granted				$ 34.42
Weighted average grant date fair value - vested				$ 0.00
Weighted average grant date fair value - forfeited		$ 0.00		$ 0.00
Weighted average grant date fair value - end of period		$ 34.42		$ 34.42