Income Tax Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pre-tax income
Domestic	$ 1,136.1	$ 1,320.4	$ 1,488.3
Foreign	(656.2)	39.4	(105.1)
Income (loss) before income taxes	479.9	1,359.8	1,383.2
Current:
Federal	69.1	(22.9)	(177.1)
State	9.4	(4.7)	4.7
Foreign	46.7	38.7	36.5
Total current tax expense (benefit)	125.2	11.1	(135.9)
Deferred:
Federal	128.3	232.2	(79.5)
State	22.2	31.2	33.5
Foreign	(42.0)	(49.3)	(22.7)
Total deferred tax expense (benefit)	108.5	214.1	(68.7)
Total income tax expense (benefit)	$ 233.7	$ 225.2	$ (204.6)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate	21.00%	21.00%	35.00%
State income taxes, net of federal benefits	3.40%	1.40%	2.20%
Effect of foreign tax rates and tax planning	(21.20%)	(8.10%)	(16.50%)
Effect of U.S. tax reform	0.00%	0.20%	(41.00%)
Effect of unrecognized tax benefits	3.70%	0.80%	(0.30%)
Change in valuation allowance	6.00%	0.70%	3.60%
Goodwill impairment	36.50%	0.00%	0.00%
Other, net	(0.70%)	0.60%	2.20%
Effective tax rate	48.70%	16.60%	(14.80%)
U.S.
Pre-tax income
Income (loss) before income taxes	$ 1,301.8	$ 1,320.7	$ 1,394.2
Deferred:
Total deferred tax expense (benefit)			(567.0)
Canada
Pre-tax income
Income (loss) before income taxes	$ (508.7)	$ 157.0	$ 210.2
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate	26.00%
Minimum | Europe Segment
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate	9.00%
Maximum | Europe Segment
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory Federal income tax rate	25.00%