Other Commitments And Contingencies (Tables)
 6 Months Ended
Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Guarantee Obligations
The total guarantees and indemnities in existence at June 30, 2015 and the years in which they expire were:
(in millions)
Total
2015
2016
2017
2018
2019
After
Guarantees of debt
$
2,750.0

$
—

$
—

$
—

$
500.0

$
—

$
2,250.0

Lines of credit
20.0

20.0

—

—

—

—

—

Total commercial commitments
$
2,770.0

$
20.0

$
—

$
—

$
500.0

$
—

$
2,250.0