NORTHWESTERN CORP
COMPANY
10-K
FORM
2019-02-12
FILING DATE
2018-12-31
FY PERIOD END
1817
FACTS
SIC 4931
Filing Software Workiva
CIK 0000073088
Taxonomy US GAAP 2018
SIC 4931
CIK 0000073088
Filing Software Workiva
Taxonomy US GAAP 2018
Standard Concepts
541
Extended Concepts
151
22%
Extended Concepts
Errors
0
What are errors?
What are errors?
Indicate problems with an XBRL formatted filing that are sufficient grounds for SEC rejection of the XBRL portion of the filing.
Data Quality Errors
0
What are data quality errors?
What are data quality errors?
Indicate areas that may not meet the standards set by the Data Quality Committee (DQC), and may reveal areas where the XBRL can be improved.