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LONG-TERM DEBT (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Debt | The Evergy Companies' long-term debt is detailed in the following tables.
December 31, 2020 | Issuing Entity |  | Year Due |  | Evergy |  | Evergy Kansas Central |  | Evergy Metro
Mortgage Bonds |  |  |  |  | (millions)
3.25% Series | Evergy Kansas Central, Inc. |  | 2025 |  | 250.0 |  |  | 250.0 |  |  | — |
2.55% Series | Evergy Kansas Central, Inc. |  | 2026 |  | 350.0 |  |  | 350.0 |  |  | — |
3.10% Series | Evergy Kansas Central, Inc. |  | 2027 |  | 300.0 |  |  | 300.0 |  |  | — |
4.125% Series | Evergy Kansas Central, Inc. |  | 2042 |  | 550.0 |  |  | 550.0 |  |  | — |
4.10% Series | Evergy Kansas Central, Inc. |  | 2043 |  | 430.0 |  |  | 430.0 |  |  | — |
4.625% Series | Evergy Kansas Central, Inc. |  | 2043 |  | 250.0 |  |  | 250.0 |  |  | — |
4.25% Series | Evergy Kansas Central, Inc. |  | 2045 |  | 300.0 |  |  | 300.0 |  |  | — |
3.25% Series | Evergy Kansas Central, Inc. |  | 2049 |  | 300.0 |  |  | 300.0 |  |  |
3.45% Series | Evergy Kansas Central, Inc. |  | 2050 |  | 500.0 |  |  | 500.0 |  |  | — |
6.15% Series | Evergy Kansas South, Inc. |  | 2023 |  | 50.0 |  |  | 50.0 |  |  | — |
6.53% Series | Evergy Kansas South, Inc. |  | 2037 |  | 175.0 |  |  | 175.0 |  |  | — |
6.64% Series | Evergy Kansas South, Inc. |  | 2038 |  | 100.0 |  |  | 100.0 |  |  | — |
4.30% Series | Evergy Kansas South, Inc. |  | 2044 |  | 250.0 |  |  | 250.0 |  |  | — |
2.95% EIRR bonds | Evergy Metro, Inc. |  | 2023 |  | 79.5 |  |  | — |  |  | 79.5 |
4.125% Series | Evergy Metro, Inc. |  | 2049 |  | 400.0 |  |  | — |  |  | 400.0 |
2.25% Series | Evergy Metro, Inc. |  | 2030 |  | 400.0 |  |  | — |  |  | 400.0 |
9.44% Series | Evergy Missouri West, Inc. |  | 2021 |  | 1.1 |  |  | — |  |  | — |
Pollution Control Bonds |  |  |  |  |  |  |  |  |
0.18% Series(b) | Evergy Kansas Central, Inc. |  | 2032 |  | 45.0 |  |  | 45.0 |  |  | — |
0.18% Series(b) | Evergy Kansas Central, Inc. |  | 2032 |  | 30.5 |  |  | 30.5 |  |  | — |
0.18% Series(b) | Evergy Kansas South, Inc. |  | 2027 |  | 21.9 |  |  | 21.9 |  |  | — |
2.50% Series | Evergy Kansas South, Inc. |  | 2031 |  | 50.0 |  |  | 50.0 |  |  | — |
0.18% Series(b) | Evergy Kansas South, Inc. |  | 2032 |  | 14.5 |  |  | 14.5 |  |  | — |
0.18% Series(b) | Evergy Kansas South, Inc. |  | 2032 |  | 10.0 |  |  | 10.0 |  |  | — |
0.20% Series 2007A and 2007B(b) | Evergy Metro, Inc. |  | 2035 |  | 146.5 |  |  | — |  |  | 146.5 |
2.75% Series 2008 | Evergy Metro, Inc. |  | 2038 |  | 23.4 |  |  | — |  |  | 23.4 |
Senior Notes |  |  |  |  |  |  |  |  |
3.15% Series(g) | Evergy Metro, Inc. |  | 2023 |  | 300.0 |  |  | — |  |  | 300.0 |
3.65% Series(g) | Evergy Metro, Inc. |  | 2025 |  | 350.0 |  |  | — |  |  | 350.0 |
6.05% Series (5.78% rate)(a)(g) | Evergy Metro, Inc. |  | 2035 |  | 250.0 |  |  | — |  |  | 250.0 |
5.30% Series(g) | Evergy Metro, Inc. |  | 2041 |  | 400.0 |  |  | — |  |  | 400.0 |
4.20% Series(g) | Evergy Metro, Inc. |  | 2047 |  | 300.0 |  |  | — |  |  | 300.0 |
4.20% Series(g) | Evergy Metro, Inc. |  | 2048 |  | 300.0 |  |  | — |  |  | 300.0 |
8.27% Series | Evergy Missouri West, Inc. |  | 2021 |  | 80.9 |  |  | — |  |  | — |
3.49% Series A | Evergy Missouri West, Inc. |  | 2025 |  | 36.0 |  |  | — |  |  | — |
4.06% Series B | Evergy Missouri West, Inc. |  | 2033 |  | 60.0 |  |  | — |  |  | — |
4.74% Series C | Evergy Missouri West, Inc. |  | 2043 |  | 150.0 |  |  | — |  |  | — |
3.74% Series | Evergy Missouri West, Inc. |  | 2022 |  | 100.0 |  |  | — |  |  | — |
4.85% Series | Evergy, Inc.(f) |  | 2021 |  | 350.0 |  |  | — |  |  | — |
5.292% Series | Evergy, Inc.(f) |  | 2022 |  | 287.5 |  |  | — |  |  | — |
2.45% Series | Evergy, Inc. |  | 2024 |  | 800.0 |  |  | — |  |  | — |
2.90% Series (3.77% rate)(a) | Evergy, Inc. |  | 2029 |  | 800.0 |  |  | — |  |  | — |
Medium Term Notes |  |  |  |  |  |  |  |  |
7.33% Series | Evergy Missouri West, Inc. |  | 2023 |  | 3.0 |  |  | — |  |  | — |
7.17% Series | Evergy Missouri West, Inc. |  | 2023 |  | 7.0 |  |  | — |  |  | — |
Fair value adjustment(e) |  |  |  |  | 110.4 |  |  | — |  |  | — |
Current maturities(c) |  |  |  |  | (436.4) |  |  | — |  |  | — |
Unamortized debt discount and debt issuance costs |  |  |  | (84.9) |  |  | (45.4) |  |  | (26.4) |
Total excluding current maturities(d) |  |  |  | $ | 9,190.9 |  |  | $ | 3,931.5 |  |  | $ | 2,923.0 |
December 31, 2019 | Issuing Entity |  | Year Due |  | Evergy |  | Evergy Kansas Central |  | Evergy Metro
Mortgage Bonds |  |  |  |  | (millions)
5.10% Series | Evergy Kansas Central, Inc. |  | 2020 |  | $ | 250.0 |  |  | $ | 250.0 |  |  | $ | — |
3.25% Series | Evergy Kansas Central, Inc. |  | 2025 |  | 250.0 |  |  | 250.0 |  |  | — |
2.55% Series | Evergy Kansas Central, Inc. |  | 2026 |  | 350.0 |  |  | 350.0 |  |  | — |
3.10% Series | Evergy Kansas Central, Inc. |  | 2027 |  | 300.0 |  |  | 300.0 |  |  | — |
4.125% Series | Evergy Kansas Central, Inc. |  | 2042 |  | 550.0 |  |  | 550.0 |  |  | — |
4.10% Series | Evergy Kansas Central, Inc. |  | 2043 |  | 430.0 |  |  | 430.0 |  |  | — |
4.625% Series | Evergy Kansas Central, Inc. |  | 2043 |  | 250.0 |  |  | 250.0 |  |  | — |
4.25% Series | Evergy Kansas Central, Inc. |  | 2045 |  | 300.0 |  |  | 300.0 |  |  | — |
3.25% Series | Evergy Kansas Central, Inc. |  | 2049 |  | 300.0 |  |  | 300.0 |  |  |
6.15% Series | Evergy Kansas South, Inc. |  | 2023 |  | 50.0 |  |  | 50.0 |  |  | — |
6.53% Series | Evergy Kansas South, Inc. |  | 2037 |  | 175.0 |  |  | 175.0 |  |  | — |
6.64% Series | Evergy Kansas South, Inc. |  | 2038 |  | 100.0 |  |  | 100.0 |  |  | — |
4.30% Series | Evergy Kansas South, Inc. |  | 2044 |  | 250.0 |  |  | 250.0 |  |  | — |
2.95% EIRR bonds | Evergy Metro, Inc. |  | 2023 |  | 79.5 |  |  | — |  |  | 79.5 |
4.125% Series | Evergy Metro, Inc. |  | 2049 |  | 400.0 |  |  | — |  |  | 400.0 |
9.44% Series | Evergy Missouri West, Inc. |  | 2020-2021 |  | 2.3 |  |  | — |  |  | — |
Pollution Control Bonds |  |  |  |  |  |  |  |  |
1.39% Series(b) | Evergy Kansas Central, Inc. |  | 2032 |  | 45.0 |  |  | 45.0 |  |  | — |
1.39% Series(b) | Evergy Kansas Central, Inc. |  | 2032 |  | 30.5 |  |  | 30.5 |  |  | — |
1.39% Series(b) | Evergy Kansas South, Inc. |  | 2027 |  | 21.9 |  |  | 21.9 |  |  | — |
2.50% Series | Evergy Kansas South, Inc. |  | 2031 |  | 50.0 |  |  | 50.0 |  |  | — |
1.39% Series(b) | Evergy Kansas South, Inc. |  | 2032 |  | 14.5 |  |  | 14.5 |  |  | — |
1.39% Series(b) | Evergy Kansas South, Inc. |  | 2032 |  | 10.0 |  |  | 10.0 |  |  | — |
1.432% Series 2007A and 2007B(b) | Evergy Metro, Inc. |  | 2035 |  | 146.5 |  |  | — |  |  | 146.5 |
2.75% Series 2008 | Evergy Metro, Inc. |  | 2038 |  | 23.4 |  |  | — |  |  | 23.4 |
Senior Notes |  |  |  |  |  |  |  |  |
3.15% Series(g) | Evergy Metro, Inc. |  | 2023 |  | 300.0 |  |  | — |  |  | 300.0 |
3.65% Series(g) | Evergy Metro, Inc. |  | 2025 |  | 350.0 |  |  | — |  |  | 350.0 |
6.05% Series (5.78% rate)(a)(g) | Evergy Metro, Inc. |  | 2035 |  | 250.0 |  |  | — |  |  | 250.0 |
5.30% Series(g) | Evergy Metro, Inc. |  | 2041 |  | 400.0 |  |  | — |  |  | 400.0 |
4.20% Series(g) | Evergy Metro, Inc. |  | 2047 |  | 300.0 |  |  | — |  |  | 300.0 |
4.20% Series(g) | Evergy Metro, Inc. |  | 2048 |  | 300.0 |  |  | — |  |  | 300.0 |
8.27% Series | Evergy Missouri West, Inc. |  | 2021 |  | 80.9 |  |  | — |  |  | — |
3.49% Series A | Evergy Missouri West, Inc. |  | 2025 |  | 36.0 |  |  | — |  |  | — |
4.06% Series B | Evergy Missouri West, Inc. |  | 2033 |  | 60.0 |  |  | — |  |  | — |
4.74% Series C | Evergy Missouri West, Inc. |  | 2043 |  | 150.0 |  |  | — |  |  | — |
3.74% Series | Evergy Missouri West, Inc. |  | 2022 |  | 100.0 |  |  | — |  |  | — |
4.85% Series | Evergy, Inc.(f) |  | 2021 |  | 350.0 |  |  | — |  |  | — |
5.292% Series | Evergy, Inc.(f) |  | 2022 |  | 287.5 |  |  | — |  |  | — |
2.45% Series | Evergy, Inc. |  | 2024 |  | 800.0 |  |  | — |  |  | — |
2.90% Series (3.77% rate)(a) | Evergy, Inc. |  | 2029 |  | 800.0 |  |  | — |  |  | — |
Medium Term Notes |  |  |  |  |  |  |  |  |
7.33% Series | Evergy Missouri West, Inc. |  | 2023 |  | 3.0 |  |  | — |  |  | — |
7.17% Series | Evergy Missouri West, Inc. |  | 2023 |  | 7.0 |  |  | — |  |  | — |
Fair value adjustment(e) |  |  |  |  | 125.5 |  |  | — |  |  | — |
Current maturities(c) |  |  |  |  | (251.1) |  |  | (250.0) |  |  | — |
Unamortized debt discount and debt issuance costs |  |  |  | (80.7) |  |  | (40.8) |  |  | (24.4) |
Total excluding current maturities(d) |  |  |  | $ | 8,746.7 |  |  | $ | 3,436.1 |  |  | $ | 2,525.0 |
(a)Rate after amortizing gains/losses recognized in OCI on settlements of interest rate hedging instruments. (b)Variable rate. (c)Evergy's current maturities total as of December 31, 2020 and 2019, includes $4.4 million and $4.3 million, respectively, of fair value adjustments recorded in connection with purchase accounting for the merger transaction. (d)At December 31, 2020 and 2019, does not include $50.0 million and $21.9 million of secured Series 2005 Environmental Improvement Revenue Refunding (EIRR) bonds because the bonds were repurchased in September 2015 and are held by Evergy Metro. (e)Represents the fair value adjustments recorded at Evergy consolidated related to the long-term debt of Great Plains Energy, Evergy Metro and Evergy Missouri West in connection with purchase accounting for the merger transaction. This amount is not part of future principal payments and will amortize over the remaining life of the associated debt instruments. (f)Originally issued by Great Plains Energy but assumed by Evergy, Inc. as part of the merger transaction. (g)Effectively secured pursuant to the General Mortgage Indenture and Deed of Trust dated as of December 1, 1986, as supplemented (Evergy Metro Mortgage Indenture) through the issuance of collateral mortgage bonds to the trustee in 2019. The following table summarizes Evergy's and Evergy Kansas Central's long-term debt of VIEs.
|  |  | December 31 |
|  | 2020 |  | 2019
|  |  | (millions) |
2.398% due 2021 |  |  | $ | 18.8 |  |  |  |  | $ | 51.1 |  |
Current maturities |  |  | (18.8) |  |  |  |  | (32.3) |  |
Total excluding current maturities |  |  | $ | — |  |  |  |  | $ | 18.8 |  |
Schedule of Maturities of Long-Term Debt | Evergy's, Evergy Kansas Central's and Evergy Metro's long-term debt maturities and the long-term debt maturities of VIEs for the next five years are detailed in the following table.
|  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025
|  | (millions)
Evergy(a) |  | $ | 432.0 |  |  | $ | 387.5 |  |  | $ | 439.5 |  |  | $ | 800.0 |  |  | $ | 636.0 |
Evergy Kansas Central(a) |  | — |  |  | — |  |  | 50.0 |  |  | — |  |  | 250.0 |
Evergy Metro |  | — |  |  | — |  |  | 379.5 |  |  | — |  |  | 350.0 |
VIEs |  | 18.8 |  |  | — |  |  | — |  |  | — |  |  | — |
(a) Excludes long-term debt maturities of VIEs.

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