Shared-Based Compensation - Schedule of Performance Based Awards Goals with Respect to TSR and ROIC (Detail)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
TSR Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold performance, percentage	35.00%
Target performance, percentage	50.00%
Maximum performance, percentage	75.00%
ROIC Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold performance, percentage	6.30%	6.70%
Target performance, percentage	7.00%	7.90%
Maximum performance, percentage	8.60%	8.70%