Equity (Details 5) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	2 Months Ended	3 Months Ended
	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 One of DST's unconsolidated affiliates affiliate	Dec. 31, 2013 One of DST's unconsolidated affiliates affiliate	Mar. 23, 2014 Argyros Group
Unconsolidated affiliates
Number of unconsolidated affiliates with an interest rate swap					1	1
Unconsolidated affiliate's interest rate swap liability, fair value					$ 48,200,000	$ 45,500,000
Equity method investments ownership percentage					50.00%	50.00%	22.00%
Proportionate share in unconsolidated affiliate's interest rate swap liability					24,100,000	22,800,000
Stock repurchases
Common stock repurchased (in shares)				0.8
Stock Repurchase Program, Authorized Amount		250,000,000	200,000,000
Aggregate repurchase price of common stock				52,500,000
Shares outstanding		42.1	42.1	44.1			9.2
Stock Issued During Period, Value, New Issues			450,000,000
Share receipts and withholding amount from option exercise and restricted stock vesting			5,500,000	21,600,000
Cash dividends declared (in dollars per share)			$ 0.30
Dividends, common stock			12,900,000
Payments of dividends	$ 12,600,000