Restructuring - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | 21 Months Ended | ||||
---|---|---|---|---|---|---|---|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
Employee Severance [Member]
|
Sep. 30, 2012
Employee Severance [Member]
|
Sep. 30, 2013
Employee Severance [Member]
|
|
Restructuring Cost and Reserve [Line Items] | |||||||
Pre-tax restructuring charges | $ 3 | $ 44 | $ 13 | $ 51 | |||
Pre-tax restructuring charges associated with this reorganization related to employee severance and benefit costs | 6 | 46 | |||||
Employee severance and benefit costs from restructurings beginning in 2012 | 62 | ||||||
Employee severance and benefit cost payments through the balance sheet date | 53 | ||||||
Remaining employee severance payable through our restructuring efforts | $ 6 | $ 6 | |||||
Completion date of restructuring activities | Dec. 31, 2014 |