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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS
Common stock, par value
Common stock, shares authorized	500,000	500,000
Common, shares issued	265,317	264,913
Common, shares outstanding	265,317	264,913
Exchangeable, shares issued	31,842	32,246
Exchangeable, shares outstanding	31,842	32,246

X

- Definition

This element represents total number of exchangeable common shares that have been issued to shareholders.

+ References

No definition available.

+ Details

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X

- Definition

This element represents total number of shares of exchangeable common stock held by shareholders.

+ References

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+ Details

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X

- Definition

Face amount per share of no-par value common stock.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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