XML 54 R44.htm IDEA: XBRL DOCUMENT v3.19.1
Acquisitions - Purchase Price Allocation (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Oct. 31, 2018
Business Acquisition [Line Items]      
Goodwill $ 5,703 $ 5,702  
Elan Financial Services      
Business Acquisition [Line Items]      
Trade accounts receivable     $ 20
Prepaid expenses and other current assets     94
Property and equipment     9
Intangible assets     353
Goodwill     240
Accounts payable and other current liabilities     (56)
Total purchase price     $ 660