Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities:
Net Income	$ 203,506	$ 325,858
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	183,508	169,029
Deferred income tax provision	15,780	45,992
Subsea BOP control systems inventory write-down	9,025	0
Net loss (gain) on sales of property and equipment	111	(1,241)
Noncash compensation	12,688	15,897
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	98,357	(152,492)
Inventory	5,135	7,536
Other operating assets	(49,140)	2,308
Currency translation effect on working capital	(19,366)	(12,808)
Current liabilities	(80,086)	(12,893)
Other operating liabilities	(6,458)	(1,700)
Total adjustments to net income	169,554	59,628
Net Cash Provided by Operating Activities	373,060	385,486
Cash Flows from Investing Activities:
Purchases of property and equipment	(139,208)	(301,488)
Payments to Acquire Businesses, Net of Cash Acquired	(229,979)	(39,788)
Payments to Acquire Other Investments	(19,531)	0
Distributions of capital from unconsolidated affiliates	3,265	3,534
Dispositions of property and equipment	376	2,118
Net Cash Used in Investing Activities	(385,077)	(335,624)
Cash Flows from Financing Activities:
Proceeds from (Repayments of) Lines of Credit	0	250,000
Proceeds from Notes Payable	50,000	0
Excess tax benefits from employee benefit plans	(781)	3,083
Cash Dividends	(80,036)	(81,759)
Purchases of treasury stock	(100,459)	(236,684)
Net Cash Provided by (Used in) Financing Activities	(131,276)	(65,360)
Effect of Exchange Rate on Cash and Cash Equivalents	(16,266)	(1,340)
Net Increase (Decrease) in Cash and Cash Equivalents	(159,559)	(16,838)
Cash and Cash Equivalents-Beginning of Period	430,714	91,430
Cash and Cash Equivalents-End of Period	$ 271,155	$ 74,592