Restructuring, Impairment and Other Charges - Fair Values, Valuation Techniques and Related Unobservable Inputs of Level Three (Detail) - Customer Relationships - Fair Value, Inputs, Level 3 $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2014
USD ($)
| |
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |
| Fair Value | $ 0 |
| Attrition rate | 12.00% |