Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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CAPITAL STOCK - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		70 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2014
Equity [Abstract]
Options and restricted stock, anti-dilutive (in shares)	5,500,000	6,700,000
Payments of dividend on common stock	$ 94	$ 95
Number of shares authorized to be repurchased (in shares)				40,000,000	40,000,000
Number of shares repurchased during period (in shares)	0		40,000,000
Average price of shares repurchased during period (in USD per share)			$ 79.18