XML 95 R76.htm IDEA: XBRL DOCUMENT v3.10.0.1
Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other identifiable intangibles, net $ 5,951 $ 6,591
Level 1 and Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of total debt 10,850 $ 10,432
Level 3 [Member] | Non-recurring Fair Value Measurements [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of assets 17,878  
Cost and equity method investments 127  
Goodwill 11,800  
Other identifiable intangibles, net $ 5,951