CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 1,755.4	$ 760.0
Short-term investments	17.9	14.8
Accounts receivable, net of allowances of $29.1 in 2012 and $28.0 in 2011	621.8	489.8
Deferred tax assets, net	38.7	82.2
Other current assets	91.9	77.6
Total current assets	2,525.7	1,424.4
Property and equipment, net	307.1	326.8
Goodwill	637.1	642.9
Intangible assets, net	226.5	253.6
Deferred tax assets, net	168.5	146.4
Other assets	96.0	82.0
Total assets	3,960.9	2,876.1
Current liabilities:
Accounts payable and accrued liabilities	555.3	452.3
Unrecognized tax benefits		90.0
Current portion of long-term debt	63.8	71.3
Deferred revenue	545.8	520.4
Total current liabilities	1,164.9	1,134.0
Non-current portion of deferred revenue	94.9	97.7
Long-term debt	1,607.4	1,172.5
Deferred tax liabilities, net	58.1	49.6
Unrecognized tax benefits	156.6	115.4
Other liabilities	410.1	404.8
Total liabilities	3,492.0	2,974.0
Contingencies (Note 17)
Redeemable noncontrolling interest	72.3	60.5
Shareholders' equity (deficit):
Preferred stock, par value $.01 per share; 10,000,000 shares authorized; no shares issued and outstanding
Capital surplus	365.1	394.5
Retained earnings	4,713.3	4,176.1
Treasury stock, at cost; 119,650,254 and 120,462,232 shares of common stock at December 31, 2012 and December 31, 2011, respectively	(4,614.5)	(4,635.5)
Accumulated other comprehensive loss	(82.1)	(107.5)
Total Moody's shareholders' equity (deficit)	385.2	(169.0)
Noncontrolling interests	11.4	10.6
Total shareholders' equity (deficit)	396.6	(158.4)
Total liabilities, redeemable noncontrolling interest and shareholders' equity (deficit)	3,960.9	2,876.1
Series common stock
Shareholders' equity (deficit):
Common stock
Common Stock
Shareholders' equity (deficit):
Common stock	$ 3.4	$ 3.4