Shareholders' Equity and Earnings Per Common Share - Common Stock Rollforward (Details)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Common shares, beginning balance	261,675,811	230,000,000
Common shares issued	0	30,800,000
Common stock acquired - share repurchase	(8,400,000)	0
Share-based compensation programs	1,300,000	0
Common shares, ending balance	254,637,825	260,800,000
Common Stock, Issued
Common shares, beginning balance	261,800,000	230,100,000
Common shares issued	0	30,800,000
Common stock acquired - share repurchase	0	0
Share-based compensation programs	1,700,000	0
Common shares, ending balance	263,500,000	260,900,000
Common Stock, Held in Treasury
Common shares, beginning balance	(100,000)	(100,000)
Common shares issued	0	0
Common stock acquired - share repurchase	8,400,000	0
Share-based compensation programs	(400,000)	0
Common shares, ending balance	(8,900,000)	(100,000)