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v3.19.1

Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Millions | Total | Common Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2017 | $ 2,182.6 | $ 0.9 | $ 471.2 | $ 1,867.4 | $ (156.9)
Beginning Balance (in shares) at Dec. 31, 2017 |  | 94,350 |  |  |
Common stock dividends declared | (59.5) | $ 0.0 | 0.0 | (59.5) | 0.0
Share-based compensation | 5.1 | $ 0.0 | 5.1 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | (2) |  |  |
Adoption of ASC 606 | ASU 2014-09 | 1.6 | $ 0.0 | 0.0 | 1.6 | 0.0
Comprehensive income | 144.0 | 0.0 | 0.0 | 140.1 | 3.9
Ending Balance at Mar. 31, 2018 | 2,273.8 | $ 0.9 | 476.3 | 1,949.6 | (153.0)
Ending Balance (in shares) at Mar. 31, 2018 |  | 94,348 |  |  |
Beginning Balance at Dec. 31, 2018 | 2,672.4 | $ 0.9 | 494.5 | 2,315.8 | (138.8)
Beginning Balance (in shares) at Dec. 31, 2018 |  | 94,497 |  |  |
Common stock dividends declared | (74.8) | $ 0.0 | 0.0 | (74.8) | 0.0
Share-based compensation | 6.9 | $ 0.0 | 6.9 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | (3) |  |  |
Comprehensive income | 190.1 | $ 0.0 | 0.0 | 186.8 | 3.3
Ending Balance at Mar. 31, 2019 | $ 2,794.6 | $ 0.9 | $ 501.4 | $ 2,427.8 | $ (135.5)
Ending Balance (in shares) at Mar. 31, 2019 |  | 94,494 |  |  |

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- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=109196918&loc=d3e11149-113907 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109196918&loc=d3e11178-113907 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79507207&loc=d3e4534-113899 + Details
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e557-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580 + Details
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