XML 31 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9
INVESTMENTS (Net Invesmtent Income) (DETAILS) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Interest And Dividend Income Operating $ 52us-gaap_InterestAndDividendIncomeOperating $ 95us-gaap_InterestAndDividendIncomeOperating $ 114us-gaap_InterestAndDividendIncomeOperating
Investment Income Investment Expense (2)us-gaap_InvestmentIncomeInvestmentExpense (3)us-gaap_InvestmentIncomeInvestmentExpense (4)us-gaap_InvestmentIncomeInvestmentExpense
Total net investment income (loss) 50us-gaap_NetInvestmentIncome 92us-gaap_NetInvestmentIncome 110us-gaap_NetInvestmentIncome
Gain (Loss) on Investments (6)us-gaap_GainLossOnInvestments 68us-gaap_GainLossOnInvestments (5)us-gaap_GainLossOnInvestments
Fixed Maturities [Member]      
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Interest And Dividend Income Operating 36us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
79us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
97us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
Gain (Loss) on Investments (10)us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
67us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
(5)us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_FixedMaturitiesMember
Mortgage Loans On Real Estate Member      
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Interest And Dividend Income Operating 2us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
2us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
9us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
Gain (Loss) on Investments 4us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
1us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
2us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageLoansOnRealEstateMember
Policy Loans [Member]      
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Interest And Dividend Income Operating 1us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_PolicyLoansMember
6us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_PolicyLoansMember
8us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_PolicyLoansMember
Derivative [Member]      
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Interest And Dividend Income Operating 13us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
8us-gaap_InterestAndDividendIncomeOperating
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
 
Gain (Loss) on Sale of Derivatives 8us-gaap_GainLossOnSaleOfDerivatives
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
2us-gaap_GainLossOnSaleOfDerivatives
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
 
Unrealized Gain (Loss) on Derivatives 5us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
6us-gaap_UnrealizedGainLossOnDerivatives
/ us-gaap_InvestmentTypeAxis
= us-gaap_DerivativeMember
 
Impact issuance (repurchase) of AllianceBernstein units [Member]      
Schedule Of Investment Income Reported Amounts By Category [Line Items]      
Gain (Loss) on Investments $ 0us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= mloa_ImpactOfIssuanceOfAffiliateUnitsMember
$ 0us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= mloa_ImpactOfIssuanceOfAffiliateUnitsMember
$ (2)us-gaap_GainLossOnInvestments
/ us-gaap_InvestmentTypeAxis
= mloa_ImpactOfIssuanceOfAffiliateUnitsMember