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Income Taxes - Narrative (Detail)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Unconsolidated effective income tax rate	27.00%	28.00%

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- Definition

Effective Income Tax Rate Reconciliation, Not Including Non-Controlling Interest, Percent

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- References

No definition available.

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