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Earnings Per Share (EPS) And Dividends (Dividend Payments On Common Stock) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Disclosure Earnings Per Share E P S And Dividends Dividend Payments On Common Stock [Abstract] |  |
DIVIDENDS PAID PER SHARE OF COMMON STOCK | $ 0.39 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.37 us-gaap_CommonStockDividendsPerShareCashPaid
Dividend Payments on Common Stock | $ 197 us-gaap_PaymentsOfDividendsCommonStock | $ 187 us-gaap_PaymentsOfDividendsCommonStock

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