Consolidated Balance Sheets (Parenthetical) (EUR €)	Dec. 31, 2014	Dec. 31, 2013	Jan. 22, 2007
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	540,000,000us-gaap_PreferredStockSharesAuthorized	540,000,000us-gaap_PreferredStockSharesAuthorized	540,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, nominal value	€ 1.04	€ 1.04
Common stock, shares authorized	1,200,000,000us-gaap_CommonStockSharesAuthorized	1,200,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	910,797,305us-gaap_CommonStockSharesIssued	910,703,305us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	873,939,583us-gaap_CommonStockSharesOutstanding	890,606,763us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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

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