Statements of Unaudited Condensed Consolidated Changes in Equity Statement - USD ($) $ in Millions |
Total |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Treasury Stock [Member] |
AOCI Attributable to Parent [Member] |
Noncontrolling Interest [Member] |
Balance, beginning of period (in shares) at Dec. 31, 2017 |
Ìý
|
297,400,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period PY at Dec. 31, 2017 |
$ (444.1)
|
$ 37.7
|
$ 3,933.9
|
$ (4,207.3)
|
$ (169.6)
|
$ (39.0)
|
$ 0.2
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Adoption of accounting standard |
34.0
|
Ìý
|
Ìý
|
34.0
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
(84.3)
|
Ìý
|
Ìý
|
(84.3)
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
7.7
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
7.7
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
(76.6)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |
Ìý
|
300,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures |
1.9
|
Ìý
|
(15.8)
|
Ìý
|
17.7
|
Ìý
|
Ìý
|
Balance, end of period (in shares) at Mar. 31, 2018 |
Ìý
|
297,700,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period PY at Mar. 31, 2018 |
(484.8)
|
$ 37.7
|
3,918.1
|
(4,257.6)
|
(151.9)
|
(31.3)
|
0.2
|
Balance, beginning of period (in shares) at Dec. 31, 2017 |
Ìý
|
297,400,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period PY at Dec. 31, 2017 |
(444.1)
|
$ 37.7
|
3,933.9
|
(4,207.3)
|
(169.6)
|
(39.0)
|
0.2
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
80.8
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
16.8
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period (in shares) at Jun. 30, 2018 |
Ìý
|
297,800,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period PY at Jun. 30, 2018 |
(306.3)
|
$ 37.7
|
3,918.3
|
(4,092.5)
|
(147.6)
|
(22.2)
|
0.0
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
TOTAL COMPREHENSIVE LOSS |
97.6
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period (in shares) at Mar. 31, 2018 |
Ìý
|
297,700,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period PY at Mar. 31, 2018 |
(484.8)
|
$ 37.7
|
3,918.1
|
(4,257.6)
|
(151.9)
|
(31.3)
|
0.2
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
165.1
|
Ìý
|
Ìý
|
165.1
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
9.1
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
9.1
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
174.2
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Distributions to noncontrolling interest |
(0.2)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
(0.2)
|
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |
Ìý
|
100,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures |
4.5
|
Ìý
|
0.2
|
Ìý
|
4.3
|
Ìý
|
Ìý
|
Balance, end of period (in shares) at Jun. 30, 2018 |
Ìý
|
297,800,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period PY at Jun. 30, 2018 |
(306.3)
|
$ 37.7
|
3,918.3
|
(4,092.5)
|
(147.6)
|
(22.2)
|
$ 0.0
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
TOTAL COMPREHENSIVE LOSS |
174.2
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period at Dec. 31, 2018 |
$ 424.2
|
$ 37.7
|
3,916.7
|
(3,060.2)
|
(186.1)
|
(283.9)
|
Ìý
|
Balance, beginning of period (in shares) at Dec. 31, 2018 |
292,611,569
|
292,600,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
$ (22.1)
|
Ìý
|
Ìý
|
(22.1)
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
8.4
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
8.4
|
Ìý
|
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |
Ìý
|
1,700,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures |
(10.0)
|
Ìý
|
(56.5)
|
Ìý
|
46.5
|
Ìý
|
Ìý
|
Stock Repurchased During Period, Shares |
Ìý
|
(11,500,000)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Common Share Repurchases, Value |
(124.3)
|
Ìý
|
Ìý
|
Ìý
|
(124.3)
|
Ìý
|
Ìý
|
Dividends, Common Stock |
(14.5)
|
Ìý
|
Ìý
|
(14.5)
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period at Mar. 31, 2019 |
261.7
|
$ 37.7
|
3,860.2
|
(3,096.8)
|
(263.9)
|
(275.5)
|
Ìý
|
Balance, end of period (in shares) at Mar. 31, 2019 |
Ìý
|
282,800,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
TOTAL COMPREHENSIVE LOSS |
(13.7)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period at Dec. 31, 2018 |
$ 424.2
|
$ 37.7
|
3,916.7
|
(3,060.2)
|
(186.1)
|
(283.9)
|
Ìý
|
Balance, beginning of period (in shares) at Dec. 31, 2018 |
292,611,569
|
292,600,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
$ 138.7
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
$ 12.1
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Repurchased During Period, Shares |
(24,400,000)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Common Share Repurchases, Value |
$ (252.9)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period at Jun. 30, 2019 |
$ 285.6
|
$ 37.7
|
3,863.6
|
(2,952.6)
|
(391.3)
|
(271.8)
|
Ìý
|
Balance, end of period (in shares) at Jun. 30, 2019 |
298,007,453
|
270,000,000.0
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
TOTAL COMPREHENSIVE LOSS |
$ 150.8
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance, beginning of period at Mar. 31, 2019 |
261.7
|
$ 37.7
|
3,860.2
|
(3,096.8)
|
(263.9)
|
(275.5)
|
Ìý
|
Balance, beginning of period (in shares) at Mar. 31, 2019 |
Ìý
|
282,800,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
NET INCOME (LOSS) |
160.8
|
Ìý
|
Ìý
|
160.8
|
Ìý
|
Ìý
|
Ìý
|
Other Comprehensive Income (Loss), Net of Tax |
3.7
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
3.7
|
Ìý
|
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |
Ìý
|
100,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures |
$ 4.6
|
Ìý
|
3.4
|
Ìý
|
1.2
|
Ìý
|
Ìý
|
Stock Repurchased During Period, Shares |
(12,900,000)
|
12,900,000
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Common Share Repurchases, Value |
$ (128.6)
|
Ìý
|
Ìý
|
Ìý
|
128.6
|
Ìý
|
Ìý
|
Dividends, Common Stock |
(16.6)
|
Ìý
|
Ìý
|
16.6
|
Ìý
|
Ìý
|
Ìý
|
Balance, end of period at Jun. 30, 2019 |
$ 285.6
|
$ 37.7
|
$ 3,863.6
|
$ (2,952.6)
|
$ (391.3)
|
$ (271.8)
|
Ìý
|
Balance, end of period (in shares) at Jun. 30, 2019 |
298,007,453
|
270,000,000.0
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
TOTAL COMPREHENSIVE LOSS |
$ 164.5
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|