Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Common stock, par value	$ 0.30	$ 0.30
Common stock, shares authorized	1,800,000,000us-gaap_CommonStockSharesAuthorized	1,800,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	992,020,000us-gaap_CommonStockSharesIssued	1,014,027,000us-gaap_CommonStockSharesIssued
Common stock held in treasury, shares	87,041,000us-gaap_TreasuryStockShares	87,041,000us-gaap_TreasuryStockShares
$4.50 Series-1,673,000 shares (callable at $120) [Member]
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	23,000,000	23,000,000
Preferred stock, shares issued	1,673,000	1,673,000
Preferred Stock, Redemption Amount	$ 120	$ 120
$3.50 Series-700,000 shares (callable at $102) [Member]
Preferred stock, no par value	$ 0.00	$ 0.00
Preferred stock, shares authorized	23,000,000	23,000,000
Preferred stock, shares issued	700,000	700,000
Preferred Stock, Redemption Amount	$ 102	$ 102

Face amount or stated value per share of common stock.

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