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Capital Stock (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||
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Jun. 30, 2011
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Mar. 31, 2011
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Jun. 30, 2011
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Jun. 13, 2011
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May 17, 2011
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Dec. 31, 2010
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Mar. 31, 2010
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Jun. 13, 2011
Common Stock [Member]
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Jun. 13, 2011
Over-allotment Option [Member]
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May 25, 2011
Preferred Class A [Member]
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May 25, 2011
Preferred Class B [Member]
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May 17, 2011
Maximum [Member]
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| Common Shares, Issued | 149,195,469 | Ìý | 149,195,469 | 10,350,000 | Ìý | 138,845,469 | Ìý | 9,000,000 | 1,350,000 | Ìý | Ìý | Ìý |
| Price per share | 85.63 | Ìý | 85.63 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Proceeds from Issuance of Common Stock | $ 853.7 | Ìý | $ 853.7 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Percentage increase in dividends payable | Ìý | Ìý | 100.00% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Dividend payable, per share | $ 0.28 | Ìý | $ 0.28 | Ìý | Ìý | $ 0.0875 | $ 0.14 | Ìý | Ìý | Ìý | Ìý | Ìý |
| Common share dividends date paid | Jun. 01, 2011 | Mar. 01, 2011 | ||||||||||
| Common share dividends date of record | Apr. 29, 2011 | Feb. 15, 2011 | ||||||||||
| Common shares, authorized | 400,000,000 | Ìý | 400,000,000 | Ìý | 224,000,000 | 224,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | 400,000,000 |
| Total shares, authorized | Ìý | Ìý | Ìý | Ìý | 231,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 407,000,000 |
| Preferred stock, shares included in amendment | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 3,000,000 | 4,000,000 | Ìý |
| X | ||||||||||
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- Definition
Increase (Decrease) In Dividends Payable, Percentage
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- Definition
Sale of stock, price per share.
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| X | ||||||||||
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- Definition
Total Shares, Authorized
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| X | ||||||||||
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- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The day, month, and year (YYYY-MM-DD) that the dividend declared as of or prior to the financial reporting date will be paid in the subsequent period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The per share amount of a dividend declared, but not paid, as of the financial reporting date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The date as of when a holder must own the stock to be entitled to the dividend. The ex-dividend date is generally 3 days before the record date.
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| X | ||||||||||
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- Definition
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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