Industry Segment and Geographic Area Data (Table Text Block)

3 Months Ended

Jun. 30, 2017

Jun. 30, 2016

Geographic Areas, Long-Lived Assets [Abstract]

Industry Segment and Geographic Area Data

		United States		Canada		Consolidated
		(Unaudited)
		(All amounts are in thousands U.S. $'s)
Quarter Ended June 30, 2017
Total revenues	$	913,114	$	44,811	$	957,925
Depreciation and amortization, net of (gains) losses on disposal		131,499		1,504		133,003
Interest expense		29,643		702		30,345
Pretax earnings		191,973		6,713		198,686
Income tax expense		70,610		1,869		72,479
Identifiable assets		9,390,397		410,743		9,801,140

		United States		Canada		Consolidated
		(Unaudited)
		(All amounts are in thousands U.S. $'s)
Quarter Ended June 30, 2016
Total revenues	$	880,729	$	42,462	$	923,191
Depreciation and amortization, net of (gains) losses on disposal		102,000		1,323		103,323
Interest expense		26,426		–		26,426
Pretax earnings		224,913		8,218		233,131
Income tax expense		83,745		2,213		85,958
Identifiable assets		8,269,109		274,700		8,543,809