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Income Taxes - Reconciliation of U.S. Statutory Rate to Effective Income Tax Rate on Continuing Basis (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	35.00%
Add (deduct) effect of:
State income taxes, net of federal income tax effect	3.80%	2.40%	1.10%
U.S. foreign inclusions and foreign tax credit	(1.60%)	2.10%	2.00%
Foreign rate differential	4.90%	0.40%	(18.50%)
Change in uncertain tax positions	5.90%	0.20%	(3.00%)
Change in valuation allowance reserve	(5.90%)	0.80%	(4.60%)
Foreign statutory tax rate change	0.00%	0.00%	(1.70%)
Impairment	(3.30%)	(9.70%)	1.80%
Sale of businesses	0.00%	0.00%	(8.10%)
Capital loss	25.40%	0.00%	0.00%
Reversal of outside basis difference	0.40%	0.00%	(6.70%)
U.S. Tax Reform, impact of change in tax rate and other	0.00%	0.00%	(174.40%)
U.S. Tax Reform, federal income tax on mandatory deemed repatriation	0.00%	0.20%	19.30%
Non-deductible compensation	(1.60%)	(0.10%)	0.90%
Return to provision	2.20%	(0.10%)	(9.20%)
Other taxes	1.60%	0.10%	2.50%
Outbound transfer of U.S. assets	68.30%	0.00%	0.00%
Other	0.80%	(0.30%)	(1.20%)
Effective rate	121.90%	17.00%	(164.80%)
Tax benefit related to outbound transfer of domestic assets	$ 522

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