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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000110019-22-000004
Filing Date
2022-02-28
Accepted
2022-02-28 16:20:14
Documents
54
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K nwp-20211231.htm   iXBRL 10-K 1057598
2 EX-31.1 nwp_20211231xex-311.htm EX-31.1 10272
3 EX-31.2 nwp_20211231xex-312.htm EX-31.2 10509
4 EX-32 nwp_20211231xex-32.htm EX-32 6529
  Complete submission text file 0000110019-22-000004.txt   4718153

Data Files

Seq Description Document Type Size
5 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT nwp-20211231.xsd EX-101.SCH 29749
6 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT nwp-20211231_cal.xml EX-101.CAL 52293
7 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT nwp-20211231_def.xml EX-101.DEF 131180
8 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT nwp-20211231_lab.xml EX-101.LAB 436184
9 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT nwp-20211231_pre.xml EX-101.PRE 266472
48 EXTRACTED XBRL INSTANCE DOCUMENT nwp-20211231_htm.xml XML 697146
Mailing Address 295 CHIPETA WAY SALT LAKE CITY UT 84108
Business Address 295 CHIPETA WAY SALT LAKE CITY UT 84108 801-583-8800
NORTHWEST PIPELINE LLC (Filer) CIK: 0000110019 (see all company filings)

IRS No.: 261157701 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-07414 | Film No.: 22689910
SIC: 4922 Natural Gas Transmission