Litigation (Details) - WesternGeco [Member] $ in Millions	1 Months Ended					36 Months Ended
	May 31, 2014 USD ($)	Apr. 30, 2014 USD ($)	Oct. 31, 2013 USD ($)	Aug. 31, 2012 USD ($)	Jun. 30, 2009 Patent	Jul. 02, 2015 USD ($)	Oct. 14, 2016 USD ($)	Sep. 30, 2016 USD ($)	May 04, 2016 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Number of patent apparatus claims contained | Patent					4
Pending Litigation [Member]
Loss Contingencies [Line Items]
Total damages awarded	$ 123.8	$ 9.4	$ 73.1	$ 105.9
Possible amount of judgment settlement to be paid									$ 22.0
Reduction in damages award in the case		$ (3.0)
Prejudgment interest expense accrued						$ 10.9
Accrual for loss contingency related to legal proceedings										$ 22.0	$ 123.8
Collateral requested for appeal bond								$ 11.0
Pending Litigation [Member] | Subsequent event [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Possible amount of judgment settlement to be paid							$ 22.0
Pending Litigation [Member] | Lost Royalties [Member]
Loss Contingencies [Line Items]
Total damages awarded				$ 12.5
Pending Litigation [Member] | Lost Profits [Member]
Loss Contingencies [Line Items]
Total damages awarded						$ 93.4