Earnings Per Share (EPS) And Dividends (Dividend Payments On Common Stock) (Detail) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
Feb. 28, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share, Diluted [Line Items]
Dividend Payments on Common Stock, Per Share		$ 2.28	$ 2.16	$ 2.04
Dividend Payments on Common Stock		$ 1,137	$ 1,079	$ 1,031
Subsequent Event [Member]
Earnings Per Share, Diluted [Line Items]
Common stock dividends per share	$ 0.60

Aggregate dividends paid during the period for each share of common stock outstanding.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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