Asset Impairment - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Mar. 31, 2020 USD ($) ReportingUnit	Sep. 30, 2020 USD ($)
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items]
Number of reporting units | ReportingUnit	5
Goodwill impairment loss	$ 230,000,000	$ 230,000,000
Goodwill impairment tax benefit	0
Impairments of long-lived assets other than goodwill	90,000,000
Tax benefit related to long-lived assets impairments	$ 4,000,000
Remaining long lived assets impairment of property plant and equipment		101,000,000
Remaining long lived assets impairment of operating lease right of use assets		$ 45,000,000
Measurement Input Discount Rate [Member] | Minimum [Member]
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items]
Reporting unit measurement input	11.50%
Measurement Input Discount Rate [Member] | Maximum [Member]
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items]
Reporting unit measurement input	12.80%