XML 24 R10.htm IDEA: XBRL DOCUMENT
v3.8.0.1

REGULATORY MATTERS | 3 Months Ended
--- | ---
Dec. 31, 2017
Regulated Operations [Abstract] |
REGULATORY MATTERS | REGULATORY MATTERS As explained in Note 1, Summary of Significant Accounting Policies, the Utilities account for regulated operations in accordance with FASB ASC Topic 980, Regulated Operations. The following regulatory assets and regulatory liabilities, including purchased gas adjustments, were reflected in the balance sheets of the Company, Spire Missouri and Spire Alabama as of December 31, 2017, September 30, 2017, and December 31, 2016.
| December 31, |  | September 30, |  | December 31,
Spire | 2017 |  | 2017 |  | 2016
Regulatory Assets: |  |  |  |  |
Current: |  |  |  |  |
Pension and postretirement benefit costs | $ | 43.0 |  |  | $ | 42.2 |  |  | $ | 63.2 |
Unamortized purchased gas adjustments | 77.9 |  |  | 102.6 |  |  | 52.2 |
Other | 28.4 |  |  | 30.7 |  |  | 19.1 |
Total Current Regulatory Assets | 149.3 |  |  | 175.5 |  |  | 134.5 |
Noncurrent: |  |  |  |  |
Future income taxes due from customers | 113.1 |  |  | 170.5 |  |  | 155.5 |
Pension and postretirement benefit costs | 394.8 |  |  | 404.7 |  |  | 439.2 |
Cost of removal | 123.9 |  |  | 123.3 |  |  | 131.6 |
Unamortized purchased gas adjustments | — |  |  | 9.9 |  |  | 4.7 |
Energy efficiency | 30.0 |  |  | 29.0 |  |  | 26.0 |
Other | 54.8 |  |  | 53.7 |  |  | 29.4 |
Total Noncurrent Regulatory Assets | 716.6 |  |  | 791.1 |  |  | 786.4 |
Total Regulatory Assets | $ | 865.9 |  |  | $ | 966.6 |  |  | $ | 920.9 |
Regulatory Liabilities: |  |  |  |  |
Current: |  |  |  |  |
Rate Stabilization and Equalization (RSE) adjustment | $ | 1.0 |  |  | $ | 1.4 |  |  | $ | 3.8 |
Unbilled service margin | — |  |  | — |  |  | 22.0 |
Refundable negative salvage | 7.9 |  |  | 8.2 |  |  | 9.0 |
Unamortized purchased gas adjustments | 1.0 |  |  | 1.0 |  |  | 1.4 |
Other | 11.6 |  |  | 12.0 |  |  | 8.0 |
Total Current Regulatory Liabilities | 21.5 |  |  | 22.6 |  |  | 44.2 |
Noncurrent: |  |  |  |  |
Deferred taxes due to customers | 177.4 |  |  | — |  |  | — |
Pension and postretirement benefit costs | 31.5 |  |  | 32.2 |  |  | 28.3 |
Refundable negative salvage | 3.8 |  |  | 4.1 |  |  | 8.9 |
Accrued cost of removal | 81.7 |  |  | 83.8 |  |  | 74.7 |
Other | 40.7 |  |  | 37.1 |  |  | 20.2 |
Total Noncurrent Regulatory Liabilities | 335.1 |  |  | 157.2 |  |  | 132.1 |
Total Regulatory Liabilities | $ | 356.6 |  |  | $ | 179.8 |  |  | $ | 176.3 |
| December 31, |  | September 30, |  | December 31,
Spire Missouri | 2017 |  | 2017 |  | 2016
Regulatory Assets: |  |  |  |  |
Current: |  |  |  |  |
Pension and postretirement benefit costs | $ | 34.9 |  |  | $ | 34.9 |  |  | $ | 56.3 |
Unamortized purchased gas adjustments | 38.5 |  |  | 57.4 |  |  | 33.8 |
Other | 3.3 |  |  | 3.3 |  |  | 3.4 |
Total Current Regulatory Assets | 76.7 |  |  | 95.6 |  |  | 93.5 |
Noncurrent: |  |  |  |  |
Future income taxes due from customers | 113.1 |  |  | 170.5 |  |  | 155.5 |
Pension and postretirement benefit costs | 315.8 |  |  | 322.7 |  |  | 333.3 |
Unamortized purchased gas adjustments | — |  |  | 9.9 |  |  | 4.7 |
Energy efficiency | 30.0 |  |  | 29.0 |  |  | 26.0 |
Other | 25.2 |  |  | 25.7 |  |  | 23.9 |
Total Noncurrent Regulatory Assets | 484.1 |  |  | 557.8 |  |  | 543.4 |
Total Regulatory Assets | $ | 560.8 |  |  | $ | 653.4 |  |  | $ | 636.9 |
Regulatory Liabilities: |  |  |  |  |
Current: |  |  |  |  |
Other | $ | 2.7 |  |  | $ | 2.7 |  |  | $ | 2.7 |
Total Current Regulatory Liabilities | 2.7 |  |  | 2.7 |  |  | 2.7 |
Noncurrent: |  |  |  |  |
Deferred taxes due to customers | 159.2 |  |  | — |  |  | — |
Accrued cost of removal | 52.0 |  |  | 54.5 |  |  | 54.8 |
Other | 30.0 |  |  | 26.7 |  |  | 12.5 |
Total Noncurrent Regulatory Liabilities | 241.2 |  |  | 81.2 |  |  | 67.3 |
Total Regulatory Liabilities | $ | 243.9 |  |  | $ | 83.9 |  |  | $ | 70.0 |
| December 31, |  | September 30, |  | December 31,
Spire Alabama | 2017 |  | 2017 |  | 2016
Regulatory Assets: |  |  |  |  |
Current: |  |  |  |  |
Pension and postretirement benefit costs | $ | 7.2 |  |  | $ | 7.2 |  |  | $ | 6.8 |
Unamortized purchased gas adjustments | 39.4 |  |  | 45.2 |  |  | 17.1 |
Other | 11.4 |  |  | 12.2 |  |  | 7.6 |
Total Current Regulatory Assets | 58.0 |  |  | 64.6 |  |  | 31.5 |
Noncurrent: |  |  |  |  |
Pension and postretirement benefit costs | 70.8 |  |  | 72.6 |  |  | 96.8 |
Cost of removal | 123.9 |  |  | 123.3 |  |  | 131.6 |
Other | 2.7 |  |  | 1.1 |  |  | 1.1 |
Total Noncurrent Regulatory Assets | 197.4 |  |  | 197.0 |  |  | 229.5 |
Total Regulatory Assets | $ | 255.4 |  |  | $ | 261.6 |  |  | $ | 261.0 |
Regulatory Liabilities: |  |  |  |  |
Current: |  |  |  |  |
RSE adjustment | $ | 1.0 |  |  | $ | 1.4 |  |  | $ | 3.8 |
Unbilled service margin | — |  |  | — |  |  | 22.0 |
Refundable negative salvage | 7.9 |  |  | 8.2 |  |  | 9.0 |
Other | 2.4 |  |  | 2.4 |  |  | 2.6 |
Total Current Regulatory Liabilities | 11.3 |  |  | 12.0 |  |  | 37.4 |
Noncurrent: |  |  |  |  |
Pension and postretirement benefit costs | 31.5 |  |  | 32.2 |  |  | 28.3 |
Refundable negative salvage | 3.9 |  |  | 4.1 |  |  | 8.9 |
Other | 3.6 |  |  | 3.3 |  |  | 3.4 |
Total Noncurrent Regulatory Liabilities | 39.0 |  |  | 39.6 |  |  | 40.6 |
Total Regulatory Liabilities | $ | 50.3 |  |  | $ | 51.6 |  |  | $ | 78.0 |
A portion of the Company’s and Spire Missouri’s regulatory assets are not earning a return, as shown in the table below:
| Spire |  | Spire Missouri
| December 31, |  | September 30, |  | December 31, |  | December 31, |  | September 30, |  | December 31,
| 2017 |  | 2017 |  | 2016 |  | 2017 |  | 2017 |  | 2016
Future income taxes due from customers | $ | 113.1 |  |  | $ | 170.5 |  |  | $ | 155.5 |  |  | $ | 113.1 |  |  | $ | 170.5 |  |  | $ | 155.5 |
Pension and postretirement benefit costs | 193.8 |  |  | 198.5 |  |  | 231.4 |  |  | 193.8 |  |  | 198.5 |  |  | 231.4 |
Other | 11.2 |  |  | 11.3 |  |  | 12.2 |  |  | 11.2 |  |  | 11.3 |  |  | 12.2 |
Total Regulatory Assets Not Earning a Return | $ | 318.1 |  |  | $ | 380.3 |  |  | $ | 399.1 |  |  | $ | 318.1 |  |  | $ | 380.3 |  |  | $ | 399.1 |
Like all the Company’s regulatory assets, these regulatory assets are expected to be recovered from customers in future rates. The recovery period for the future income taxes due from customers and pension and postretirement benefit costs could be as long as 20 years, based on current Internal Revenue Service guidelines and average remaining service life of active participants, respectively. The other items not earning a return are expected to be recovered over a period not to exceed 15 years, consistent with precedent set by the MoPSC. Spire Alabama does not have any regulatory assets that are not earning a return.

X
- Definition The entire disclosure for public utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -URI http://asc.fasb.org/topic&trid=2156578 + Details
Name: | us-gaap_PublicUtilitiesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RegulatedOperationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration