Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Long Term Debt (Details) - USD ($) $ in Millions	1 Months Ended				9 Months Ended
Long Term Debt (Details) - USD ($) $ in Millions	Nov. 30, 2016	Sep. 30, 2016	Jun. 30, 2016	Feb. 29, 2016	Sep. 30, 2016	Nov. 01, 2016	Oct. 01, 2016	Sep. 01, 2016	Jun. 01, 2016	Feb. 01, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Common Stock, Value, Issued		$ 3.2			$ 3.2						$ 3.2
PGL \| PGL Fixed First and Refunding Mortgage RR Series 4.3 Percent Bonds, Due 2035
Debt Instrument [Line Items]
Retirement of long-term debt			$ 50.0
Interest rate on long-term debt									4.30%
WG \| WG Debentures, 3.71% due 2046
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		200.0
Interest rate on long-term debt								3.71%
Integrys
Debt Instrument [Line Items]
Common Stock, Value, Issued										$ 66.4
Integrys \| Integrys unsecured Senior Notes 8 Percent, Due 2016
Debt Instrument [Line Items]
Retirement of long-term debt			$ 50.0
Interest rate on long-term debt									8.00%
Integrys \| TEG Junior Subordinated Notes, 6.11% due 2066
Debt Instrument [Line Items]
Retirement of long-term debt				$ 154.9
Interest rate on long-term debt										6.11%
Debt Instrument, Repurchase Amount										$ 128.6
Long-term Debt, Gross		$ 114.9			$ 114.9
Debt Instrument, Basis Spread on Variable Rate					2.12%
Subsequent Event \| PGL \| PGL 3.65% Series CCC Bonds due 2046
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 50.0
Interest rate on long-term debt						3.65%
Subsequent Event \| PGL \| Fixed First and Refunding Mortgage XX Series 2.21 Percent Bonds, Due 2016
Debt Instrument [Line Items]
Retirement of long-term debt	$ 50.0
Interest rate on long-term debt						2.21%
Subsequent Event \| PGL \| PGL 3.65% Series DDD Bonds due 2046 [Member]
Debt Instrument [Line Items]
Interest rate on long-term debt							3.65%
Other Commitment							$ 150.0