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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000110019-24-000003
Filing Date
2024-02-21
Accepted
2024-02-21 16:11:51
Documents
57
Period of Report
2023-12-31

Document Format Files

Seq Description Document Type Size
1 10-K nwp-20231231.htm   iXBRL 10-K 914184
2 EX-31.1 nwp_20231231xex-311.htm EX-31.1 10164
3 EX-31.2 nwp_20231231xex-312.htm EX-31.2 10407
4 EX-32 nwp_20231231xex-32.htm EX-32 6423
  Complete submission text file 0000110019-24-000003.txt   4653224

Data Files

Seq Description Document Type Size
5 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT nwp-20231231.xsd EX-101.SCH 29709
6 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT nwp-20231231_cal.xml EX-101.CAL 53827
7 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT nwp-20231231_def.xml EX-101.DEF 184054
8 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT nwp-20231231_lab.xml EX-101.LAB 440374
9 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT nwp-20231231_pre.xml EX-101.PRE 272426
59 EXTRACTED XBRL INSTANCE DOCUMENT nwp-20231231_htm.xml XML 558906
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.: 24659561
SIC: 4922 Natural Gas Transmission
(CF Office: 01 Energy & Transportation)