Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Summary of Post-Closing Guarantees) (Details)

v3.10.0.1
Commitments and Contingencies (Summary of Post-Closing Guarantees) (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Guarantees  
Guarantor Obligations [Line Items]  
Post-closing credit support at time of sale $ 87
Additional post-closing credit support 46
Release of post-closing credit support (3)
Total 130
Fair Value of Guarantees  
Guarantor Obligations [Line Items]  
Post-closing credit support at time of sale 41
Additional post-closing credit support 22
Release of post-closing credit support (1)
Total 62
Receivable from former Parent  
Guarantor Obligations [Line Items]  
Post-closing credit support at time of sale 27
Additional post-closing credit support 15
Release of post-closing credit support (1)
Total $ 41