Effect of New Accounting Pronouncements (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Changes and Error Corrections [Abstract]

Summary of Cash, Cash Equivalents and Restricted Cash

The following is a reconciliation of our December 31 cash, cash equivalents and restricted cash balances as presented in the consolidated statement of cash flows for the years ended December 31, 2017, 2016 and 2015 (in millions):

	December 31,
	2017		2016		2015
Cash and cash equivalents	$	681.2	$	545.5	$	480.4
Restricted cash		1,623.8		1,392.1		1,412.1
Total cash, cash equivalents and restricted cash	$	2,305.0	$	1,937.6	$	1,892.5