Shareholders' Equity (Schedule Of Changes In Each Class Of Shares) (Details)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders' Equity Note [Abstract]
Stock Issued During Period, Shares, Treasury Stock Reissued	6,719,270	17,903,704	11,935,423
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Beginning balance, Common Stock	1,012,261,159us-gaap_CommonStockSharesOutstanding	1,012,261,159us-gaap_CommonStockSharesOutstanding	1,012,261,159us-gaap_CommonStockSharesOutstanding
Ending balance, Common Stock	1,012,261,159us-gaap_CommonStockSharesOutstanding	1,012,261,159us-gaap_CommonStockSharesOutstanding	1,012,261,159us-gaap_CommonStockSharesOutstanding
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]
Beginning balance, Treasury Stock	264,882,461us-gaap_TreasuryStockShares	256,630,628us-gaap_TreasuryStockShares	267,556,388us-gaap_TreasuryStockShares
Acquired, Treasury Stock	47,370,415us-gaap_TreasuryStockSharesAcquired	26,155,537us-gaap_TreasuryStockSharesAcquired	1,009,663us-gaap_TreasuryStockSharesAcquired
Ending balance, Treasury Stock	305,533,606us-gaap_TreasuryStockShares	264,882,461us-gaap_TreasuryStockShares	256,630,628us-gaap_TreasuryStockShares

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

+ References

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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28,29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

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Number of shares that have been repurchased during the period and are being held in treasury.

+ References

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