Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net Income	$ 134,967	$ 201,520
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	121,486	109,408
Deferred income tax provision	539	17,703
Subsea BOP control systems inventory write-down	9,025	0
Net loss (gain) on sales of property and equipment	(76)	(344)
Noncash compensation	8,626	10,820
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	5,259	(73,272)
Inventory	1,419	418
Other operating assets	(27,041)	(22,406)
Currency translation effect on working capital	(4,483)	6,518
Current liabilities	(40,949)	29,141
Other operating liabilities	(8,308)	(5,216)
Total adjustments to net income	65,497	72,770
Net Cash Provided by Operating Activities	200,464	274,290
Cash Flows from Investing Activities:
Purchases of property and equipment	(94,780)	(221,700)
Payments to Acquire Businesses, Net of Cash Acquired	(229,979)	(39,788)
Distributions of capital from unconsolidated affiliates	2,001	2,295
Dispositions of property and equipment	177	1,797
Net Cash Used in Investing Activities	(322,581)	(257,396)
Cash Flows from Financing Activities:
Proceeds from (Repayments of) Lines of Credit	0	80,000
Proceeds from Notes Payable	50,000	0
Excess tax benefits from employee benefit plans	(781)	3,083
Cash Dividends	(53,618)	(53,002)
Purchases of treasury stock	(100,459)	(35,266)
Net Cash Provided by (Used in) Financing Activities	(104,858)	(5,185)
Effect of Exchange Rate on Cash and Cash Equivalents	(13,109)	191
Net Increase (Decrease) in Cash and Cash Equivalents	(240,084)	11,900
Cash and Cash Equivalents-Beginning of Period	430,714	91,430
Cash and Cash Equivalents-End of Period	$ 190,630	$ 103,330