v2.4.1.9

Condensed Financial Information Of Registrant Dividends (Details) (Parent Company [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Parent Company [Member] |  |  |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | $ 54 us-gaap_CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 21 us-gaap_CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 29 us-gaap_CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

X
- Definition This element represents disclosure of the aggregate cash dividends paid to the entity by unconsolidated subsidiaries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.9-06) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 06 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph b -Article 12 + Details
Name: | us-gaap_CashDividendsPaidToParentCompanyByUnconsolidatedSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration