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Stockholders' Equity (Narrative) (Detail) shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) shares
Equity [Abstract]
Common stock repurchased, shares | shares	5.5
Purchase of Company, value	$ 335
New Share Repurchase Plan
Equity [Abstract]
Remaining authorized amount under stock repurchase program	392
New Share Repurchase Plan | Maximum
Equity [Abstract]
Stock repurchase program, authorized amount	$ 400

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