Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of Short-term Debt

The carrying value of short-term borrowings and current portion of long-term debt outstanding at December 31, 2015 and December 31, 2014 includes:

	2015		2014
Commercial paper	$	—	$	99.6
2.450% senior notes due 2015	—		506.3
Total	$	—	$	605.9

Carrying values of the senior notes

The carrying values of the long-term portion of these senior notes at December 31, 2015 and 2014 are summarized below:

	2015		2014
1.900% senior notes due 2017	$	501.2	$	501.0
2.125% senior notes due 2018	999.9		—
2.300% senior notes due 2018	401.7		401.2
2.250% senior notes due 2019	505.1		502.5
2.875% senior notes due 2020	1,497.5		—
3.950% senior notes due 2020	507.1		502.8
3.250% senior notes due 2022	1,016.1		1,010.2
3.550% senior notes due 2022	997.4		—
4.000% senior notes due 2023	710.3		708.5
3.625% senior notes due 2024	1,001.7		996.8
3.875% senior notes due 2025	2,475.6		—
5.700% senior notes due 2040	249.6		249.5
5.250% senior notes due 2043	396.7		396.7
4.625% senior notes due 2044	996.6		996.5
5.000% senior notes due 2045	1,993.9		—
Total long-term debt	$	14,250.4	$	6,265.7