Segment Information - Schedule of Revenue from External Customers and Identifiable Assets, by Geographical Areas (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Provision pursuant to tax receivable agreement		$ 547,691	$ 18,307	$ 1,249
LTBP Trust [Member]
Segment Reporting Information [Line Items]
Provision pursuant to tax receivable agreement	$ 961,948	547,691
LMDC Holdings [Member]
Segment Reporting Information [Line Items]
Provision pursuant to tax receivable agreement			18,307	1,249
United States [Member] | LTBP Trust [Member]
Segment Reporting Information [Line Items]
Provision pursuant to tax receivable agreement		$ 547,691
United States [Member] | LMDC Holdings [Member]
Segment Reporting Information [Line Items]
Provision pursuant to tax receivable agreement			$ 18,307	$ 1,249