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SHAREHOLDERS' EQUITY (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
12 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Dec. 31, 2011
Preferred Stock
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Dec. 31, 2011
Preference Stock
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Jul. 31, 2011
Common Stock
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Jul. 31, 2010
Common Stock
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Dec. 31, 2011
Common Stock
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Sep. 25, 2011
Common Stock
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Jun. 26, 2011
Common Stock
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Mar. 27, 2011
Common Stock
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Dec. 31, 2010
Common Stock
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Sep. 25, 2010
Common Stock
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Jun. 26, 2010
Common Stock
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Mar. 28, 2010
Common Stock
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Dec. 31, 2009
Common Stock
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Sep. 27, 2009
Common Stock
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Jun. 28, 2009
Common Stock
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Mar. 29, 2009
Common Stock
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Dec. 31, 2011
Common Stock
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Dec. 31, 2010
Common Stock
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Dec. 31, 2009
Common Stock
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Feb. 28, 2011
Treasury Stock
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Dec. 31, 2007
Treasury Stock
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Dec. 31, 2011
Treasury Stock
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Dec. 31, 2010
Treasury Stock
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Dec. 31, 2009
Treasury Stock
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Dec. 31, 2008
Treasury Stock
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Dec. 31, 2011
Common Stock Held in Trust
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Dec. 31, 2010
Common Stock Held in Trust
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Dec. 31, 2009
Common Stock Held in Trust
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| Class of Stock | |||||||||||||||||||||||||||||||
| Preferred Stock, Shares Authorized | 1 | 1 | |||||||||||||||||||||||||||||
| Changes in shares of stock | |||||||||||||||||||||||||||||||
| Balance at beginning of period (in shares) | 221.8 | 222.0 | 221.7 | 221.8 | 222.0 | 221.7 | 24.0 | 20.7 | 20.4 | 2.1 | 3.0 | 5.1 | |||||||||||||||||||
| Shares acquired | 6.4 | 6.4 | 3.5 | 0.4 | 2.3 | ||||||||||||||||||||||||||
| Shares issued | 0.4 | 0.2 | 0.9 | (0.2) | (0.2) | (0.1) | |||||||||||||||||||||||||
| Employee benefits trust activity (in shares) | (0.3) | (0.9) | (2.1) | ||||||||||||||||||||||||||||
| Other shareholder transactions (in shares) | (0.4) | (0.6) | |||||||||||||||||||||||||||||
| Balance at the end of the period (in shares) | 222.2 | 221.8 | 222.0 | 222.2 | 221.8 | 222.0 | 30.2 | 24.0 | 20.7 | 20.4 | 1.8 | 2.1 | 3.0 | ||||||||||||||||||
| Treasury Stock | |||||||||||||||||||||||||||||||
| Common stock acquisition authorized (in dollars) | $ 1,000 | $ 500 | |||||||||||||||||||||||||||||
| Dividends Paid | |||||||||||||||||||||||||||||||
| Percentage increase in cash dividend per common share | 52.00% | 50.00% | |||||||||||||||||||||||||||||
| Cash dividend (in dollars per share) | $ 0.40 | $ 0.40 | $ 0.2625 | $ 0.2625 | $ 0.2625 | $ 0.2625 | $ 0.175 | $ 0.175 | $ 0.175 | $ 0.175 | $ 0.175 | $ 0.175 | $ 1.325 | $ 0.875 | $ 0.70 | ||||||||||||||||
| Total dividends paid to common shareholders (in dollars) | 255 | 172 | 141 | ||||||||||||||||||||||||||||
| Employee Benefits Trust | |||||||||||||||||||||||||||||||
| Contributions charged to income (in dollars) | 28 | 21 | 13 | ||||||||||||||||||||||||||||
| EBT shares sold on open market (in shares) | 0.7 | 1.5 | |||||||||||||||||||||||||||||
| Proceeds from sale used to fund other non-qualified employee benefit plans (in dollars) | 58 | 72 | 58 | 72 | |||||||||||||||||||||||||||
| Employee Stock Ownership Plan | |||||||||||||||||||||||||||||||
| Annual cash contributions, dividends received on unallocated shares and cash contributions from EBT (in dollars) | 2 | 10 | |||||||||||||||||||||||||||||
| Annual compensation expense (in dollars) | $ 1 | $ 4 | |||||||||||||||||||||||||||||