Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Mar. 31, 2014
Revenue	$ 786,772	$ 918,927		$ 840,201
Cost of services and products	623,323			650,710
Gross Margin	163,449			189,491
Selling, general and administrative expense	56,799			56,629
Income from Operations	106,650	152,239		132,862
Interest income	156			79
Interest expense	(6,088)			(411)
Equity earnings (losses) of unconsolidated affiliates	(255)			(36)
Other income (expense), net	700			294
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	101,163			132,788
Provision for income taxes	31,664			41,563
Net Income	$ 69,499			$ 91,225
Cash Dividends declared per Share	$ 0.27	$ 0.27	$ 0.27	$ 0.22
Basic Earnings per Share	$ 0.70			$ 0.84
Diluted Earnings per Share	$ 0.70			$ 0.84