Earnings Per Share (EPS) And Dividends (Dividend Payments On Common Stock) (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
DIVIDENDS PAID PER SHARE OF COMMON STOCK (in dollars per share)	$ 0.41	$ 0.39	$ 1.23	$ 1.17
Dividend Payments on Common Stock	$ 207	$ 198	$ 622	$ 592