XML 261 R229.htm IDEA: XBRL DOCUMENT v3.10.0.1
Condensed Financial Information (Parent Company) (Long-term Debt Outstanding) (Details)
$ in Millions, ¥ in Billions
1 Months Ended 12 Months Ended
May 08, 2018
USD ($)
Apr. 19, 2018
USD ($)
Mar. 22, 2018
USD ($)
Mar. 19, 2018
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2018
USD ($)
May 08, 2018
JPY (¥)
Apr. 19, 2018
JPY (¥)
Mar. 22, 2018
JPY (¥)
Mar. 19, 2018
JPY (¥)
Dec. 31, 2017
USD ($)
Feb. 10, 2017
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Face Amount           $ 3,200         $ 3,200      
Parent Company                            
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Interest Rate, Stated Percentage                       8.595%    
Long-term Debt [Abstract]                            
Senior Notes           11,844         14,599      
Notes Payable, Related Parties           1,957         2,000      
Long-term Debt           $ 13,801         16,599      
Parent Company | Senior Notes, Unaffiliated [Member]                            
Long-term Debt [Abstract]                            
Weighted Average Interest Rate           4.96%                
Debt Instrument, Maturity Date Range, Start           Jun. 29, 2020                
Debt Instrument, Maturity Date Range, End           May 13, 2046                
Senior Notes           $ 11,844         14,599      
Parent Company | Senior Notes, Affiliated [Member]                            
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Interest Rate, Stated Percentage 3.14% 2.97%   1.45%     3.14% 2.97%   1.45%        
Long-term Debt [Abstract]                            
Debt Instrument, Interest Rate, Effective Percentage         3.03%                  
Weighted Average Interest Rate           2.16%                
Debt Instrument, Maturity Date Range, Start           Jun. 30, 2019                
Debt Instrument, Maturity Date Range, End           Dec. 16, 2021                
Senior Notes $ 500 $ 500   $ 500 $ 250   ¥ 54.6 ¥ 53.7   ¥ 53.3        
Notes Payable, Related Parties           $ 1,957         $ 2,000      
Debt Instrument, Maturity Date Dec. 16, 2021 Jul. 15, 2021   Jun. 30, 2019 Sep. 30, 2020                  
Minimum | Parent Company | Senior Notes, Unaffiliated [Member]                            
Long-term Debt [Abstract]                            
Debt Instrument, Interest Rate, Effective Percentage           3.00%                
Minimum | Parent Company | Senior Notes, Affiliated [Member]                            
Long-term Debt [Abstract]                            
Debt Instrument, Interest Rate, Effective Percentage           0.82%                
Maximum | Parent Company | Senior Notes, Unaffiliated [Member]                            
Long-term Debt [Abstract]                            
Debt Instrument, Interest Rate, Effective Percentage           6.50%                
Maximum | Parent Company | Senior Notes, Affiliated [Member]                            
Long-term Debt [Abstract]                            
Debt Instrument, Interest Rate, Effective Percentage           3.14%                
MaturityOctober2019Rate1.72 [Member] | Parent Company | Senior Notes, Affiliated [Member]                            
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Interest Rate, Stated Percentage     1.72%           1.72%          
Long-term Debt [Abstract]                            
Senior Notes     $ 250           ¥ 26.5          
Debt Instrument, Maturity Date     Oct. 01, 2019                      
MaturitySeptember2020Rate.82 [Member] | Parent Company | Senior Notes, Affiliated [Member]                            
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Interest Rate, Stated Percentage     0.82%           0.82%          
Long-term Debt [Abstract]                            
Senior Notes     $ 250           ¥ 26.5          
Debt Instrument, Maturity Date     Sep. 30, 2020                      
MetLife Exchange Trust I [Member] | Parent Company                            
Condensed Financial Statements, Captions [Line Items]                            
Debt Instrument, Face Amount                         $ 204 $ 10