|3 Months Ended|
Mar. 31, 2018
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Schedule of changes in goodwill||
The following table presents the changes in goodwill including acquisitions as discussed in Note 4 of our Condensed Consolidated Financial Statements.
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
Reference 1: http://www.xbrl.org/2003/role/presentationRef