Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net Income	$ 47,412	$ 134,967
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	119,760	121,486
Deferred income tax provision	761	539
Subsea BOP control systems inventory write-down	0	9,025
Net loss (gain) on sales of property and equipment	8	(76)
Noncash compensation	8,558	8,626
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	65,660	5,259
Inventory	(14,570)	1,419
Other operating assets	48,533	(27,041)
Currency translation effect on working capital	3,593	(4,483)
Current liabilities	(121,127)	(40,949)
Other operating liabilities	(12,928)	(8,308)
Total adjustments to net income	98,248	65,497
Net Cash Provided by Operating Activities	145,660	200,464
Cash Flows from Investing Activities:
Purchases of property and equipment	(52,944)	(94,780)
Payments to Acquire Businesses, Net of Cash Acquired	0	(229,979)
Payments to Acquire Other Investments	(30,158)	0
Distributions of capital from unconsolidated affiliates	3,926	2,001
Dispositions of property and equipment	1,976	177
Net Cash Used in Investing Activities	(77,200)	(322,581)
Cash Flows from Financing Activities:
Proceeds from Notes Payable	0	50,000
Excess tax benefits from employee benefit plans	(3,004)	(781)
Cash Dividends	(52,952)	(53,618)
Purchases of treasury stock	0	(100,459)
Net Cash Provided by (Used in) Financing Activities	(55,956)	(104,858)
Effect of Exchange Rate on Cash and Cash Equivalents	(4,549)	(13,109)
Net Increase (Decrease) in Cash and Cash Equivalents	7,955	(240,084)
Cash and Cash Equivalents-Beginning of Period	385,235	430,714
Cash and Cash Equivalents-End of Period	$ 393,190	$ 190,630