Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	2,000,000,000us-gaap_CommonStockSharesAuthorized	2,000,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	1,587,583,586us-gaap_CommonStockSharesIssued	1,575,018,236us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	1,340,017,316us-gaap_CommonStockSharesOutstanding	1,327,451,966us-gaap_CommonStockSharesOutstanding
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000us-gaap_PreferredStockSharesAuthorized	50,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Treasury shares	247,566,270us-gaap_TreasuryStockShares	247,566,270us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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