Percentage-Of-Completion Contracts (Schedule Of Unapproved Claims And Change Orders) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Unapproved Change Orders And Claims Recorded In Revenues	$ 35	$ 36
Unapproved change orders	46	62	$ 31	$ 115
Changes in Estimates at Completion	42	3
Change Orders Approved by Customer	(27)	(56)
Engineering and Construction [Member]
Change Orders Approved by Customer	(6)
Parent Share of Probable Unapproved Claims of Unconsolidated Subsidiary [Member]
Unapproved change orders	$ 73	$ 90

The amount of costs incurred on unapproved change orders when it is probable that the cost will be recovered through a change in the contract price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

-SubTopic 310

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=51673017&loc=d3e49324-109356

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

-SubTopic 340

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=51666792&loc=d3e50000-109363

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph c(3)

-Article 5

Name:	us-gaap_UnapprovedChangeOrdersAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant