Transfers of Financial Assets - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Transfer of Financial Assets Accounted for as Sales [Line Items]
Aggregate face value of receivables sold	$ 799,400,000	$ 617,000,000
Cash proceeds from receivables	798,700,000	616,700,000
Proceeds from customers	698,400,000	481,400,000
Repurchase of accounts receivables sold	34,700,000	$ 51,200,000
Proceeds from other current liabilities	50,400,000		$ 66,800,000
Revolving Credit Facility [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Current maximum funding limit	400,000,000
U.S and Japan Revolving Arrangements [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Maximum exposures to loss associated	35,500,000		33,000,000
Derecognized net receivables outstanding amount	$ 390,400,000		$ 365,900,000