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Pension Plans, Retirement Benefits and Savings Plans (tables)
 12 Months Ended
Dec. 31, 2013
Pension Plans, Retirement Benefits and Savings Plans disclosure  
Summary of the funded status, obligations and amounts recognized in the consolidated balance sheet for the Company's benefit plans [Table Text Block]

 

 

 
   Qualified
Domestic Pension
Plan		   Nonqualified
and Foreign
Pension Plans		   Total  
(at and for the year ended December 31, in millions)
  2013   2012   2013   2012   2013   2012  

Change in projected benefit obligation:

                                      

Benefit obligation at beginning of year

   $ 3,055   $ 2,706   $ 206   $ 183   $ 3,261   $ 2,889  

Benefits earned

     112     107     6     6     118     113  

Interest cost on benefit obligation

     124     129     8     9     132     138  

Actuarial loss (gain)

     (243 )   225     (19 )   17     (262 )   242  

Benefits paid

     (140 )   (112 )   (9 )   (13 )   (149 )   (125 )

Foreign currency exchange rate change

     —     —     2     4     2     4  

Acquisition

     —     —     15     —     15     —  
                           

Benefit obligation at end of year

   $ 2,908   $ 3,055   $ 209   $ 206   $ 3,117   $ 3,261  
                           
                           

Change in plan assets:

                                      

Fair value of plan assets at beginning of year

   $ 2,761   $ 2,414   $ 98   $ 86   $ 2,859   $ 2,500  

Actual return on plan assets

     453     242     12     10     465     252  

Company contributions

     —     217     6     11     6     228  

Benefits paid

     (140 )   (112 )   (9 )   (13 )   (149 )   (125 )

Foreign currency exchange rate change

     —     —     2     4     2     4  

Acquisition

     —     —     20     —     20     —  
                           

Fair value of plan assets at end of year

     3,074     2,761     129     98     3,203     2,859  
                           

Funded status of plan at end of year

   $ 166   $ (294 ) $ (80 ) $ (108 ) $ 86   $ (402 )
                           
                           

Amounts recognized in the statement of financial position consist of:

                                      

Accrued over-funded benefit plan assets

   $ 176   $ —   $ 10   $ —   $ 186   $ —  

Accrued under-funded benefit plan liabilities

     (10 )   (294 )   (90 )   (108 )   (100 )   (402 )
                           

Total

   $ 166   $ (294 ) $ (80 ) $ (108 ) $ 86   $ (402 )
                           
                           

Amounts recognized in accumulated other comprehensive income consist of:

                                      

Net actuarial loss

   $ 704   $ 1,300   $ 34   $ 63   $ 738   $ 1,363  

Prior service benefit

     —     —     —     —     —     —  
                           

Total

   $ 704   $ 1,300   $ 34   $ 63   $ 738   $ 1,363  
                           
                           


 

 
   Postretirement
Benefit Plans		  
(at and for the year ended December 31, in millions)
  2013   2012  

Change in projected benefit obligation:

              

Benefit obligation at beginning of year

   $ 222   $ 246  

Benefits earned

     —     —  

Plan amendments

     —     (31 )

Interest cost on benefit obligation

     9     12  

Actuarial loss (gain)

     (25 )   11  

Benefits paid

     (14 )   (16 )

Acquisition

     19     —  
           

Benefit obligation at end of year

   $ 211   $ 222  
           

Change in plan assets:

              

Fair value of plan assets at beginning of year

   $ 18   $ 19  

Actual return on plan assets

     —     1  

Company contributions

     13     14  

Benefits paid

     (14 )   (16 )
           

Fair value of plan assets at end of year

     17     18  
           

Funded status of plan at end of year

   $ (194 ) $ (204 )
           
           

Amounts recognized in the statement of financial position consist of:

              

Accrued under-funded benefit plan liability

   $ (194 ) $ (204 )
           
           

Amounts recognized in accumulated other comprehensive income consist of:

              

Net actuarial gain

   $ (44 ) $ (50 )

Prior service benefit

     (28 )   —  
           

Total

   $ (72 ) $ (50 )
           
           

        
Summary of the components of net periodic benefit cost and other amounts recognized in other comprehensive income related to the benefit plans [Table Text Block]

 

 

 
   Pension Plans   Postretirement
Benefit Plans		  
(in millions)
  2013   2012   2011   2013   2012   2011  

Net Periodic Benefit Cost:

                                      

Service cost

   $ 118   $ 113   $ 98   $ —   $ —   $ —  

Interest cost on benefit obligation

     132     138     135     9     12     13  

Expected return on plan assets

     (208 )   (187 )   (182 )   (1 )   (1 )   (1 )

Amortization of unrecognized:

                                      

Prior service benefit

     —     —     —     (2 )   —     —  

Net actuarial loss (gain)

     107     89     76     —     (1 )   —  
                           

Net benefit expense

   $ 149   $ 153   $ 127   $ 6   $ 10   $ 12  
                           

Other Changes in Benefit Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income:

                                      

Prior service benefit

   $ —   $ —   $ —   $ —   $ —   $ —  

Net actuarial loss (gain)

     (518 )   176     388     (24 )   11     (5 )

Plan amendments

     —     —     —     —     (31 )   —  

Amortization of prior service benefit

     —     —     —     2     —     —  

Amortization of net actuarial gain (loss)

     (107 )   (89 )   (76 )   —     1     —  
                           

Total other changes recognized in other comprehensive income

     (625 )   87     312     (22 )   (19 )   (5 )
                           

Total other changes recognized in net benefit expense and other comprehensive income

   $ (476 ) $ 240   $ 439   $ (16 ) $ (9 ) $ 7  
                           
                           

        
Benefit obligations assumptions, net periodic benefit cost assumptions and health care cost trend rate sensitivity [Table Text Block]

 

 

(at and for the year ended December 31,)
  2013   2012  

Assumptions used to determine benefit obligations

              

Discount rate

     4.96 %   4.15 %

Future compensation increase rate

     4.00 %   4.00 %

Assumptions used to determine net periodic benefit cost

    
 		    
 		  

Discount rate

     4.15 %   4.90 %

Expected long-term rate of return on pension plans' assets

     7.50 %   7.50 %

Expected long-term rate of return on postretirement benefit plans' assets

     4.00 %   5.00 %

Assumed health care cost trend rates

    
 		    
 		  

Following year:

              

Medical (before age 65)

     7.25 %   7.50 %

Medical (age 65 and older)

     6.75 %   7.50 %

Rate to which the cost trend rate is assumed to decline (ultimate trend rate):

    
5.00
%		  
5.00
%

Year that the rate reaches the ultimate trend rate:

    
 		    
 		  

Medical (before age 65)

     2022     2018  

Medical (age 65 and older)

     2020     2018  

        
Level within the fair value hierarchy at which the financial assets of the Company's pension plans are measured [Table Text Block]

 

 

(at December 31, 2013, in millions)
  Total   Level 1   Level 2   Level 3  

Invested assets:

                          

Fixed maturities

                          

Obligations of states, municipalities and political subdivisions

   $ 18   $ —   $ 18   $ —  

Debt securities issued by foreign governments

     14     —     14     —  

Mortgage-backed securities, collateralized mortgage obligations and pass-through securities

     11     —     11     —  

All other corporate bonds

     447     —     447     —  
                   

Total fixed maturities

     490     —     490     —  
                   

Mutual funds

                          

Equity mutual funds

     1,355     1,355     —     —  

Bond mutual funds

     446     446     —     —  
                   

Total mutual funds

     1,801     1,801     —     —  
                   

Equity securities

     571     570     1     —  
                   

Other investments(1)

     4     —     —     4  
                   

Cash and short-term securities

                          

U.S. Treasury securities

     122     122     —     —  

Money market mutual funds

     19     19     —     —  

Other

     196     31     165     —  
                   

Total cash and short-term securities

     337     172     165     —  
                   

Total

   $ 3,203   $ 2,543   $ 656   $ 4  
                   
                   
(1)
The fair value estimates of the two private equity funds comprising these investments are determined by an external fund manager based on recent filings, operating results, balance sheet stability, growth and other business and market sector fundamentals. Due to the significant unobservable inputs in these valuations, the total fair value estimates are disclosed in Level 3.

(at December 31, 2012, in millions)
  Total   Level 1   Level 2   Level 3  

Invested assets:

                          

Fixed maturities

                          

Obligations of states, municipalities and political subdivisions

   $ 7   $ —   $ 7   $ —  

Debt securities issued by foreign governments

     14     —     14     —  

Mortgage-backed securities, collateralized mortgage obligations and pass-through securities

     9     —     9     —  

All other corporate bonds

     383     —     383     —  
                   

Total fixed maturities

     413     —     413     —  
                   

Mutual funds

                          

Equity mutual funds

     1,143     1,143     —     —  

Bond mutual funds

     406     406     —     —  
                   

Total mutual funds

     1,549     1,549     —     —  
                   

Equity securities

     450     450     —     —  
                   

Other investments(1)

     6     —     —     6  
                   

Cash and short-term securities

                          

U.S. Treasury securities

     132     132     —     —  

Money market mutual funds

     22     22     —     —  

Other

     287     17     270     —  
                   

Total cash and short-term securities

     441     171     270     —  
                   

Total

   $ 2,859   $ 2,170   $ 683   $ 6  
                   
                   
(1)
The fair value estimates of the two private equity funds comprising these investments are determined by an external fund manager based on recent filings, operating results, balance sheet stability, growth and other business and market sector fundamentals. Due to the significant unobservable inputs in these valuations, the total fair value estimates are disclosed in Level 3.

        
Changes in the Level 3 fair value category for the pension plans [Table Text Block]

 

 

 
   Other
Investments		  
(at and for the year ended December 31, in millions)
  2013   2012  

Balance at beginning of year

   $ 6   $ 18  

Actual return on plan assets:

              

Relating to assets still held

     1     2  

Relating to assets sold during the year

     —     —  

Purchases, sales, settlements and maturities:

              

Purchases

     —     —  

Sales

     (3 )   (12 )

Settlements/maturities

     —     —  

Gross transfers into Level 3

     —     —  

Gross transfers out of Level 3

     —     (2 )
           

Balance at end of year

   $ 4   $ 6  
           
           
Estimated future benefit payments [Table Text Block]

 

 

 
   Benefits Expected to be Paid  
(in millions)
  Pension Plans   Postretirement
Benefit Plans		  

2014

   $ 165   $ 15  

2015

     176     15  

2016

     187     15  

2017

     198     15  

2018

     209     14  

2019 through 2023

     1,165     70