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Equity Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2012
Equity Based Compensation [Abstract] |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
| Stock Options |  |  |
| Number of |  | Weighted-Average Exercise Price |  | Aggregate Intrinsic Value (in millions) |  | Performance Contingent Units
| Options |  |  |  |  |  |
Outstanding January 1, 2010 | 3,200,639 |  | $ | 39.96 |  |  |  |  |  | 556,216
Granted | 535,867 |  | $ | 47.10 |  |  |  |  |  | 253,342
Exercised / Lapsed | (314,815) |  | $ | 30.80 |  |  |  |  |  | (93,597)
Forfeited | (39,375) |  | $ | 43.20 |  |  |  |  |  | (14,419)
Outstanding December 31, 2010 | 3,382,316 |  | $ | 41.91 |  |  |  |  |  | 701,542
Granted | 503,259 |  | $ | 59.74 |  |  |  |  |  | 222,580
Exercised / Lapsed | (736,452) |  | $ | 35.26 |  |  |  |  |  | (146,638)
Forfeited | (42,243) |  | $ | 45.50 |  |  |  |  |  | (21,818)
Outstanding December 31, 2011 | 3,106,880 |  | $ | 46.30 |  |  |  |  |  | 755,666
Granted | 685,331 |  | $ | 56.65 |  |  |  |  |  | 257,679
Exercised / Lapsed | (287,485) |  | $ | 29.96 |  |  |  |  |  | (282,035)
Forfeited | (50,331) |  | $ | 52.89 |  |  |  |  |  | (25,980)
Outstanding December 31, 2012 | 3,454,395 |  | $ | 49.63 |  | $ | 13.5 |  |  | 705,330
Options exercisable | 2,279,783 |  | $ | 48.59 |  | $ | 11.2 |  |  |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices | Number Outstanding as of 12/31/2012 |  | Weighted-Average Remaining Contractual Life |  | Weighted-Average Exercise Price |  | Number Exercisable as of 12/31/2012 |  | Weighted-Average Exercise Price
$25.00 - $34.99 | 635,041 |  | 6.0 |  | $ | 32.18 |  | 461,326 |  | $ | 32.17
$35.00 - $44.99 | 141,750 |  | 1.0 |  | $ | 39.61 |  | 141,750 |  | $ | 39.61
$45.00 - $54.99 | 891,253 |  | 5.0 |  | $ | 47.26 |  | 638,286 |  | $ | 47.32
$55.00 + | 1,786,351 |  | 7.2 |  | $ | 57.80 |  | 1,038,421 |  | $ | 57.89
| Totals | 3,454,395 |  | 6.2 |  | $ | 49.63 |  | 2,279,783 |  | $ | 48.59

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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