ACCRUED LIABILITIES

12 Months Ended

Dec. 31, 2012

ACCRUED LIABILITIES

6.  ACCRUED LIABILITIES

Accrued liabilities consist of the following:

	December 31,		December 31,
	2012		2011
Accrued salaries, vacation and related benefits	$	93.8	$	75.4
Accrued product warranties		63.2		51.5
Accrued interest		28.2		21.7
Income taxes payable		29.5		16.3
Deferred revenue		118.2		113.9
Other accrued liabilities		141.3		101.4
	$	474.2	$	380.2

Deferred revenue includes billings in excess of costs and estimated earnings of $19.0 and $37.9 at December 31, 2012 and 2011, respectively.