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Benefit Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Pension Plans
Dec. 31, 2012
Pension Plans
Dec. 31, 2011
Pension Plans
Dec. 31, 2013
Postretirement Benefit Plans
Dec. 31, 2012
Postretirement Benefit Plans
Dec. 31, 2011
Postretirement Benefit Plans
Oct. 02, 2012
Postretirement Benefit Plans
Kraft Foods Group
Dec. 31, 2011
Postretirement Benefit Plans
Kraft Foods Group
Dec. 31, 2013
Postemployment Benefit Plans
Dec. 31, 2012
Postemployment Benefit Plans
Dec. 31, 2013
U.S. Pension Plans
Dec. 31, 2012
U.S. Pension Plans
Dec. 31, 2011
U.S. Pension Plans
Dec. 31, 2013
U.S. Pension Plans
Equity Securities
Dec. 31, 2012
U.S. Pension Plans
Equity Securities
Dec. 31, 2013
U.S. Pension Plans
Fixed Income Securities
Dec. 31, 2012
U.S. Pension Plans
Fixed Income Securities
Dec. 31, 2013
U.S. Pension Plans
Pension Plans
Dec. 31, 2012
U.S. Pension Plans
Pension Plans
Dec. 31, 2013
U.S. Pension Plans
Pension Plans
Equity Securities
Mar. 31, 2014
U.S. Pension Plans
Pension Plans
Equity Securities
Scenario, Forecast
Dec. 31, 2013
U.S. Pension Plans
Pension Plans
Fixed Income Securities
Mar. 31, 2014
U.S. Pension Plans
Pension Plans
Fixed Income Securities
Scenario, Forecast
Dec. 31, 2013
Non-U.S. Pension Plans
Dec. 31, 2012
Non-U.S. Pension Plans
Dec. 31, 2011
Non-U.S. Pension Plans
Dec. 31, 2013
Non-U.S. Pension Plans
Equity Securities
Dec. 31, 2012
Non-U.S. Pension Plans
Equity Securities
Dec. 31, 2013
Non-U.S. Pension Plans
Fixed Income Securities
Dec. 31, 2012
Non-U.S. Pension Plans
Fixed Income Securities
Dec. 31, 2013
Non-U.S. Pension Plans
Other Plan Asset
Dec. 31, 2013
Non-U.S. Pension Plans
Pension Plans
Dec. 31, 2012
Non-U.S. Pension Plans
Pension Plans
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Equity Securities
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Credit
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Private Markets
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Other Diversifying Assets
Dec. 31, 2013
Non-U.S. Pension Plans
Largest Non U.S. Plan
Liability Matching Assets
Dec. 31, 2013
Bakery And Confectionery Union And Industry International Pension Fund
Dec. 31, 2012
Bakery And Confectionery Union And Industry International Pension Fund
Dec. 31, 2011
Bakery And Confectionery Union And Industry International Pension Fund
Dec. 31, 2013
Individually Insignificant Multiemployer Plans
Dec. 31, 2012
Individually Insignificant Multiemployer Plans
Dec. 31, 2011
Individually Insignificant Multiemployer Plans
Oct. 02, 2012
Individually Insignificant Multiemployer Plans
Kraft Foods Group
Dec. 31, 2011
Individually Insignificant Multiemployer Plans
Kraft Foods Group
Dec. 31, 2013
U.S. And International Investment Grade Debt Securities
Pension Plans
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]                                                                                                      
Accumulated benefit obligation                           $ 1,133 $ 1,218                       $ 9,605 $ 9,453                                              
Pension plans resulted in net pension liability 1,946 2,891                                                                                                  
Settlement losses                           (1) (113) (105)                                                                      
Curtailment and settlement losses                                                     (2) (9) (8)                                            
Special termination benefit                                                     1 13 6                                            
Estimated from experience differences       135     6                                                                                        
Estimated prior service cost       3     10                                                                                        
Plan assets related to certain insurance contracts 81 79                                                                                                  
Target Allocation on securities                                             60.00% 50.00% 40.00% 50.00%       35.00%   50.00%   15.00%       20.00% 16.00% 10.00% 16.00% 38.00%                 95.00%
Employer voluntary contribution                           163                                                                          
Allocation of pension plan asset                           100.00% 100.00%   53.00% 57.00% 44.00% 40.00%             100.00% 100.00%   34.00% 31.00% 45.00% 54.00%       49.00%                            
Percentage of decrease in plan's equity exposure 10.00%                                                                                                    
Employer contribution                           178             178 349         330               350 353                              
Employees contribution                                                     20                                                
Estimated future employer contributions                           10                         309                               30                
Multiemployer pension plans       32 30 32 18 31 36 13 20                                                               26 25 24 6 5 8 2 5  
Percentage of surcharge on contribution                                                                                     10.00%                
Expense for defined contribution plans 66 74 62                                                                                                
Current portion of our accrued postretirement benefit obligation             $ 9 $ 8                                                                                      
Weighted-average discount rate                       6.20% 4.00%               5.10% 4.20%                         4.00% 3.81%                              
Ultimate annual turnover rate                       0.30% 0.50%                                                                            
Increase in compensation cost                       4.00% 4.00%               4.00% 4.00%                         3.61% 3.47%