Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 Rig Hotel State Country Segment mi
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	5
Number of individual operating subsidiaries | Segment	4
Number of offshore drilling rigs | Rig	24
Number of countries where drilling rigs are located | Country	5
Miles of natural gas and NGL pipeline | mi	14,365
Number of states having natural gas storage facilities | State	4
Total number of hotels owned and/or operated	25
United States [Member]
Segment Reporting Information [Line Items]
Number of hotels	24
Canada [Member]
Segment Reporting Information [Line Items]
Number of hotels	1