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Equity Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following tables summarize the changes in accumulated other comprehensive income (loss), net of tax by component:
(In millions) | Unrealized Gains (Losses) on Securities Available for Sale, net of tax |  | Unrealized Gains (Losses) on Cash Flow Hedges, net of tax |  | Gains (Losses) on Net Investment Hedge, Net of Tax |  | Unfunded Status of Postretirement Benefit Plans, net of tax |  | Currency Translation Adjustments |  | Total
Balance, December 31, 2018 | $ | (4.0 | ) |  | $ | 34.7 |  |  | $ | 3.5 |  |  | $ | (31.3 | ) |  | $ | (243.3 | ) |  | $ | (240.4 | )
Other comprehensive income (loss) before reclassifications | 11.8 |  |  | 88.1 |  |  | 28.6 |  |  | (1.5 | ) |  | 103.8 |  |  | 230.8 |
Amounts reclassified from accumulated other comprehensive income (loss) | (3.6 | ) |  | (115.0 | ) |  | (7.0 | ) |  | — |  |  | — |  |  | (125.6 | )
Net current period other comprehensive income (loss) | 8.2 |  |  | (26.9 | ) |  | 21.6 |  |  | (1.5 | ) |  | 103.8 |  |  | 105.2 |
Balance, December 31, 2019 | $ | 4.2 |  |  | $ | 7.8 |  |  | $ | 25.1 |  |  | $ | (32.8 | ) |  | $ | (139.5 | ) |  | $ | (135.2 | )
(In millions) | Unrealized Gains (Losses) on Securities Available for Sale, net of tax |  | Unrealized Gains (Losses) on Cash Flow Hedges, net of tax |  | Gains (Losses) on Net Investment Hedge, Net of Tax |  | Unfunded Status of Postretirement Benefit Plans, net of tax |  | Currency Translation Adjustments |  | Total
Balance, December 31, 2017 | $ | (1.6 | ) |  | $ | (104.5 | ) |  | $ | — |  |  | $ | (36.8 | ) |  | $ | (175.5 | ) |  | $ | (318.4 | )
Amounts reclassified, net of tax, upon adoption of ASU 2016-01 | 1.5 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1.5 |
Balance, January 1, 2018 | (0.1 | ) |  | (104.5 | ) |  | — |  |  | (36.8 | ) |  | (175.5 | ) |  | (316.9 | )
Other comprehensive income (loss) before reclassifications | (10.6 | ) |  | 97.4 |  |  | 5.0 |  |  | 5.5 |  |  | (67.8 | ) |  | 29.5 |
Amounts reclassified from accumulated other comprehensive income (loss) | 6.7 |  |  | 41.8 |  |  | (1.5 | ) |  | — |  |  | — |  |  | 47.0 |
Net current period other comprehensive income (loss) | (3.9 | ) |  | 139.2 |  |  | 3.5 |  |  | 5.5 |  |  | (67.8 | ) |  | 76.5 |
Balance, December 31, 2018 | $ | (4.0 | ) |  | $ | 34.7 |  |  | $ | 3.5 |  |  | $ | (31.3 | ) |  | $ | (243.3 | ) |  | $ | (240.4 | )
(In millions) | Unrealized Gains (Losses) on Securities Available for Sale, net of tax |  | Unrealized Gains (Losses) on Cash Flow Hedges, net of tax |  | Gains (Losses) on Net Investment Hedge, Net of Tax |  | Unfunded Status of Postretirement Benefit Plans, net of tax |  | Currency Translation Adjustments |  | Total
Balance, December 31, 2016 | $ | (10.8 | ) |  | $ | 57.8 |  |  | $ | — |  |  | $ | (32.7 | ) |  | $ | (334.2 | ) |  | $ | (319.9 | )
Other comprehensive income (loss) before reclassifications | (3.5 | ) |  | (193.8 | ) |  | — |  |  | (4.1 | ) |  | 158.7 |  |  | (42.7 | )
Amounts reclassified from accumulated other comprehensive income (loss) | 12.7 |  |  | 31.5 |  |  | — |  |  | — |  |  | — |  |  | 44.2 |
Net current period other comprehensive income (loss) | 9.2 |  |  | (162.3 | ) |  | — |  |  | (4.1 | ) |  | 158.7 |  |  | 1.5 |
Balance, December 31, 2017 | $ | (1.6 | ) |  | $ | (104.5 | ) |  | $ | — |  |  | $ | (36.8 | ) |  | $ | (175.5 | ) |  | $ | (318.4 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table summarizes the amounts reclassified from accumulated other comprehensive income:
(In millions) |  | Income Statement Location |  | Amounts Reclassified from Accumulated Other Comprehensive Income
| For the Years Ended December 31,
| 2019 |  | 2018 |  | 2017
Gains (losses) on securities available for sale |  | Other income (expense) |  | $ | 4.5 |  |  | $ | (8.5 | ) |  | $ | (19.5 | )
|  | Income tax benefit (expense) |  | (0.9 | ) |  | 1.8 |  |  | 6.8 |
Gains (losses) on cash flow hedges |  | Revenues |  | 118.6 |  |  | (42.5 | ) |  | (32.5 | )
|  | Operating expenses |  | (3.3 | ) |  | 0.2 |  |  | 0.6 |
|  | Other income (expense) |  | 0.3 |  |  | 0.3 |  |  | 0.3 |
|  | Income tax benefit (expense) |  | (0.6 | ) |  | 0.2 |  |  | 0.1 |
Gains (losses) on net investment hedge |  | Other Income (expense) |  | 7.0 |  |  | 1.5 |  |  | — |
Total reclassifications, net of tax |  |  |  | $ | 125.6 |  |  | $ | (47.0 | ) |  | $ | (44.2 | )

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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