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Financial Information Related to Guarantor Subsidiaries (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Unsecured Senior Notes Due 2019 [Member]	Jun. 30, 2012 Unsecured Senior Notes Due 2019 [Member] Parent [Member]	Sep. 30, 2012 Unsecured Senior Notes Due 2021 [Member]	Jun. 30, 2012 Unsecured Senior Notes Due 2021 [Member] Parent [Member]	Jun. 30, 2012 SESI LLC [Member] Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Wholly owned subsidiary of Parent company							100.00%
Unsecured senior notes, issued				$ 500		$ 800
Stated interest rate on unsecured senior notes	8.00%		6.375%	6.375%	7.125%	7.125%
Common stock, par value	$ 0.001	$ 0.001
Preferred stock, par value	$ 0.01	$ 0.01

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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