Contingencies (Nu Mark Patent Litigation) (Details) - Nu Mark Patent Litigation [Member] - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended |
---|---|---|
Jan. 31, 2017 |
Dec. 31, 2016 |
|
Loss Contingencies [Line Items] | ||
Proceeds from legal settlements | $ 21 | |
Litigation settlement | $ 21 |