XML 54 R32.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Supplemental Cash Flow Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Supplemental Cash Flow Information [Abstract] |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] | The following table discloses information about investing and financing activities that affected recognized assets and liabilities but did not result in cash receipts or payments. Also disclosed in the table is cash paid for interest, net of interest capitalized, and cash paid for income taxes, net of income tax refunds.
Year ended December 31 (In millions) | 2016 | 2015 | 2014
NON-CASH INVESTING AND FINANCING ACTIVITIES |  |  |
Power plant long-term service agreement | $ | 39.5 |  | $ | 2.3 |  | $ | — |
SUPPLEMENTAL CASH FLOW INFORMATION |  |  |
Cash paid during the period for |  |  |
Interest (net of interest capitalized) (A) | $ | 141.9 |  | $ | 145.4 |  | $ | 150.8 |
Income taxes (net of income tax refunds) | (5.9 | ) | (3.4 | ) | 0.2 |
(A) | Net of interest capitalized of $7.5 million, $4.2 million and $2.4 million in 2016, 2015 and 2014, respectively.

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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