Selected Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (unaudited)

	First Quarter		Second Quarter		Third Quarter (2)		Fourth Quarter (3)		Total
	In millions, except per share data
2017
Total revenues	$	316.1	$	348.4	$	359.6	$	352.8	$	1,376.9
Net income	$	57.5	$	53.4	$	49.0	$	342.1	$	502.0
Per Share Data (1)
Basic	$	1.46	$	1.37	$	1.27	$	8.98	$	12.95
Diluted	$	1.44	$	1.35	$	1.25	$	8.83	$	12.75
2016
Total revenues	$	334.4	$	358.9	$	362.9	$	362.1	$	1,418.3
Net income	$	69.3	$	61.2	$	95.7	$	30.9	$	257.1
Per Share Data (1)
Basic	$	1.67	$	1.51	$	2.39	$	0.78	$	6.35
Diluted	$	1.66	$	1.49	$	2.36	$	0.77	$	6.29

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(1) Quarterly earnings per share may not be additive, as per share amounts are computed independently for each quarter and the full year is based on the respective weighted average common shares and common stock equivalents outstanding.

(2) In the third quarter of 2016, net income included $30.3 million of income related to the settlement of a residual sharing agreement and a $3.9 million income tax benefit resulting from a reduction in the statutory income tax rate in the U.K.

(3) In the fourth quarter of 2017, net income included a $315.9 million income tax benefit related to the impact of the enacted Tax Cuts and Jobs Act. In the fourth quarter of 2016, net income included $19.2 million of impairment losses related to certain railcars at Rail North America and a $7.1 million income tax benefit related to the utilization of foreign tax credits.