Transfers of Financial Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Transfer of Financial Assets Accounted for as Sales [Line Items]
Aggregate face value of receivables sold	$ 1,456,900,000	$ 103,100,000
Cash proceeds from receivables	1,455,600,000	103,100,000
Proceeds from customers	1,031,200,000
Repurchase of accounts receivables sold	96,300,000
Proceeds from other current liabilities	103,500,000
Incremental operating cash inflows	174,000,000	103,000,000
Revolving Credit Facility [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Current maximum funding limit	350,000,000
U.S and Japan Revolving Arrangements [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Maximum exposures to loss associated	22,900,000	$ 5,200,000
U.S Revolving Arrangements [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Derecognized net receivables outstanding amount	197,000,000
Japan Revolving Arrangements [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Derecognized net receivables outstanding amount	$ 64,200,000