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Reconciliation of Effective Income Tax Rate (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

^[2]

Sep. 30, 2016

^[2]

Jun. 30, 2016

^[2]

Mar. 31, 2016

^[2]

Dec. 31, 2015

^[2]

Sep. 30, 2015

^[2]

Jun. 30, 2015

^[2]

Mar. 31, 2015

^[2]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Valuation Allowance [Line Items]

U.S. federal statutory income tax rate

35.00%

35.00%

35.00%

Income tax provision at U.S. federal statutory rate

$ 290.6

$ 266.8

$ 252.3

State and local income taxes, net of federal income tax benefit

4.3

18.3

21.4

Impact of foreign operations, including withholding taxes

(23.9)

14.7

0.9

Change in net valuation allowance

^[1]

(13.4)

(20.6)

(66.0)

Divestitures

9.7

11.9

0.0

U.S. federal tax credits

(44.6)

0.0

0.0

Stock Compensation

(9.0)

0.0

0.0

Increase (decrease) in unrecognized tax benefits

(22.2)

(6.5)

5.2

Statutory tax rate changes

11.4

1.4

0.8

Other

(4.9)

(3.2)

1.9

Total provision for income taxes

$ 106.1

$ 63.8

$ 43.7

$ (15.6)

$ 145.4

$ 61.1

$ 77.7

$ (1.4)

$ 198.0

$ 282.8

$ 216.5

Effective income tax rate on operations

23.80%

37.10%

30.00%

[1]

Reflects changes in valuation allowance that impacted the effective income tax rate for each year presented.

[2]

The three months ended March 31, 2016 included tax benefits of $12.2 and $7.5 due to the reversal of valuation allowances and the adoption of FASB ASU 2016-09, respectively. The three months ended June 30 and December 31, 2016 included tax benefits of $23.4 related to the conclusion and settlement of a tax examination of previous years and $37.4 for refunds to be claimed on future amended U.S. federal returns, respectively.

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